Food, Science, and the Human Body

In partnership with
Professor Alyssa Crittenden, Ph.D.
University of Nevada, Las Vegas
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Course No. 1940
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  • You should buy video if you prefer learning visually and wish to take advantage of the visual elements featured in this course. While the video version can be considered lightly illustrated, there are photos, graphics, maps, timelines, evolution charts, anatomy, and reference images such as serving sizes and the digestive system, as well as text on screen, which may help reinforce material for visual learners.
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What Will You Learn?

  • Discover what our earliest human ancestors ate - and how they evolved to eat it.
  • Explore the watershed moments in human history that transformed the way we eat.
  • Consider the role your food has played in the development of the human body over millions of years.
  • Examine the nutritional science behind foods like bread, chocolate, tea, soda, beer, and more.
  • Learn about how scientific advancements like artificial meat and vertical farms can help solve world hunger.

Course Overview

It may be a well-worn saying, but scientific data backs it up: You are what you eat. Not only that: You are what your earliest ancestors ate. In short, the story of humanity is inextricably linked to the story of food.

Throughout history, our evolution as a species has been inextricably linked to the foods we eat. It’s a relationship that goes back nearly 2.8 million years to our roots as hunters and gatherers. And it continues to the present day in the form of debates over good nutrition and the future of food on an overpopulated planet.

Food has led to the rise of epic civilizations. It’s shaped—and been shaped by—watershed moments in human history, from the dawn of animal husbandry to the industrial age of mass production to the 21st-century farm-to-table movement. Most importantly: It’s led to the amazing behavioral and nutritional flexibility of the bodies we have.

Understanding our current—and future—relationship with food warrants a look back in time to the roots of food and food culture, and its intersection with science.

  • What foods did the human body evolve to eat, and why?
  • Which foods changed the course of history, and how?
  • How does the food we eat affect our genes and our minds?
  • What foods are (and aren’t) optimal for our everyday health?
  • Can we use cutting-edge science to end world hunger?

In Food, Science, and the Human Body, award-winning Professor Alyssa Crittenden of the University of Nevada, Las Vegas offers eye-opening answers to these and other perplexing questions about the evolution of the human diet and its relationship to our bodies. Bringing together insights from a range of fields including anthropology, biology, history, nutrition, health science, economics, and sociology, this exciting partnership between The Great Courses and National Geographic lays bare what science can teach us about food. Cutting through politics and separating myth from reality, these 36 lectures contain everything you need to know about everything you eat – and why you eat it.

A Multidisciplinary Approach

“We all spend countless hours thinking about, buying, preparing, consuming, and digesting food,” says Dr. Crittenden. “Our long evolutionary relationship with food is often hailed by anthropologists as one of the key milestones in human history.”

With its rich multidisciplinary approach, Food, Science, and the Human Body is designed to offer an even-handed, scientifically-based approach to the history and science of the human diet. Taking you far beyond the supermarket and the laboratory, these lectures offer a wider view of food. As you cross cultures, span time, and hop around the world from the most underfed to the most overfed human societies, here are some of the topics to consider along the way:

  • The Paleolithic Dinner Plate: A lot of news coverage has been given to the Paleo Diet movement, but the idea is based on the misconception that it mimics the actual diet of the Paleolithic era. Data from bones, stones, and teeth reveal that our ancestors had no single diet and evolved to consume a generalized diet including plant and animal matter.
  • Diets and Diseases: There is a deep connection between the evolution of the human diet and the rise of infectious and nutritional disease. For example, the second epidemiological transition in history, coinciding with the rise of industrialization, is characterized by a rise in chronic degenerative diseases like heart disease and diabetes.
  • Time to Start Cooking: Roasting, boiling, and baking are invariably “human.” Archaeological evidence of cooking implements reveals much about how our ancestors cooked their food, and stress the idea of cooking as important to the way we eat. Cooking meat, in fact, made it easier to digest and eradicated harmful bacteria.
  • More than Just Nutrition: From wine and beer to chocolate and spices, food has numerous social, cultural, and spiritual roots. Bread, for example, helped defined social status. The lightest bread was reserved for elites, while dark and heavy bread was for everyone else. Also, white bread was thought to be distinctly “American” in the early 20th century.
  • Bizarre Foods: Not everything human beings eat is universally considered food. Entomophagy, the practice of eating bugs, has been around for most of human history. Placentophagy, the eating of the placenta by a mother, is still practiced. And eating psilocybin mushrooms for their hallucinogenic qualities dates back to the Aztecs.
  • A World in Your Gut: Of all the body’s microbiomes, the gut has the greatest number of bacterial species that play a vital role in our health (from metabolizing our food to defending us from pathogens). Scientific data supports the idea that these gut microbes are “fellow travelers” in human evolution.

Pressing Questions and Concerns

Bringing a broad range of disciplines to these lectures, Dr. Crittenden makes Food, Science, and the Human Body an intriguing and illuminating catalog of some of the most pressing questions and concerns we have about what we eat, how we eat it, why we eat it, and how we’ll continue to eat it in the coming decades. Throughout the lectures, you will:

  • Compare and contrast food-related crises in different parts of the world, from mass starvation to the obesity epidemic.
  • Explore food trends and ideas, from the Mediterranean and MIND diets to the farm-to-table movement and the controversy surrounding GMOs.
  • Examine how watershed moments in history, like agriculture and mass production, were both advantageous and disadvantageous to human diet and health.
  • Bust common myths about how food acts on the body and mind, and come away with insights you can apply to your own everyday dinner plate.

Insights for When You’re Hungry

Dr. Crittenden has spent her entire career absorbed by the questions and issues examined throughout Food, Science, and the Human Body. “My fascination with the relationship between people and their food is one of the reasons that I’m teaching this course,” she says.

An anthropologist whose focus is on behavioral ecology and nutritional anthropology, Dr. Crittenden brings insights from her own research (among the Hadza hunter-gatherers of Tanzania) to these lectures. Her research has won multiple awards and has been published in top-tier journals and highlighted in magazines, including National Geographic and Smithsonian.

Plus, our partnership with National Geographic gives you access to a treasure trove of vibrant field photography, illustrations, timelines, maps, charts, portion diagrams, and other visual elements that add a wealth of understanding to a topic that stretches back millions of years.

This topic will continue to be of importance as long as human beings exist. And the information in Food, Science, and the Human Body will continue to resonate in your mind, every time you get hungry.

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36 lectures
 |  Average 29 minutes each
  • 1
    Paleo Diets and the Ancestral Appetite
    Do we have an ancestral appetite? First, uncover how similar the current Paleo diet fad is to what our actual ancestors ate. Then, learn how digestive anatomy and neural expansion played a role in the evolution of nutrition. Finally, determine whether or not humans are adapted to one specific diet. x
  • 2
    Our Hunter-Gatherer Past
    For the bulk of human history, our ancestors were hunters and gatherers. Using fascinating research from a study of one of Africa's last foraging populations, Professor Crittenden reveals insights into how hunter-gatherer societies function, and how they may have shaped the diversity of human nutrition. x
  • 3
    Stones, Bones, and Teeth
    For clues to the history of human nutrition, scientists look to fossils in the form of stones, bones, and teeth. In this lecture, learn what scientists discovered about the ancestral dinner plate through stone artifacts used for butchery, the bones of the human cranium, and the dentition of early humans. x
  • 4
    Did Meat Eating Make Us Human?
    Learn how meat changed the playing field for our earliest ancestors. First, trace the history of meat eating through human evolution. Then, use data from cut marks on bones to decipher when, exactly, we began to eat meat. Also, consider the nutritive benefits (and dangers) linked with meat consumption. x
  • 5
    Insects: The Other White Meat
    There are more than 1,900 edible insect species on Earth, and 2 billion people regularly consume insects as part of their diet. In this lecture, Professor Crittenden takes you inside the fascinating world of entomophagy (the practice of eating insects) and the ways we turn to insects for nutrition. x
  • 6
    Was the Stone Age Menu Mostly Vegetarian?
    Explore the critical role that plant foods have played in our diet. You'll study plant microfossils that radically change what we thought we knew about the Stone Age menu. You'll learn the essential role played by underground storage organs (or "tubers"). And you'll revisit Professor Crittenden's research on plant-processing techniques among Tanzanian foragers. x
  • 7
    Cooking and the Control of Fire
    Roasting. Boiling. Baking. Grilling. When did our ancestors start cooking with fire, and how? Find out in this lecture that takes you back nearly 1 million years on a journey to find out how we evolved to eat our food cooked, whether using boiling stones or a butane torch. x
  • 8
    The Neolithic Revolution
    Discover what prompted large populations of people to drastically change their subsistence strategy by domesticating plants and animals, Also, learn how this Neolithic revolution permanently altered the human diet, as well as paved the way for massive population growth, the development of nation states, and new vectors for disease. x
  • 9
    The Changing Disease-Scape
    Turn now to a darker product of the Neolithic revolution: the growth of zoonotic diseases, or diseases caused by viruses, bacteria, and parasites that spread between animals and humans. Among the ones you'll encounter here are Lyme disease, West Nile virus, malaria, salmonella, and E. coli. x
  • 10
    How Foods Spread around the World
    Once domestication was in full swing, foods began to be exchanged among different groups, leading to the subject of this lecture: delocalization. In order to better understand the development of this process, in which food consumed in one area is produced far away, you'll consider examples and case studies including bananas, apples, tomatoes, and corn. x
  • 11
    The History of the Spice Trade
    They're a common enough item in our pantries today, but in the past, spices were highly valued and tightly guarded, and were the catalyst for creating and destroying empires. Examine the spices that were critically important during the opening decades of the spice routes, including pepper, cloves, ginger, and garlic. x
  • 12
    How Sugar and Salt Shaped World History
    Salt and sugar have also played large roles in food production and global health. Topics in this lecture include how sugar is extracted from sugar cane, the rise of alternative sweeteners and sugar substitutes, early non-dietary uses of salt, and the dangers of a high-sodium diet. x
  • 13
    A Brief History of Bread
    Bread, in all its forms, is one of the most widely consumed foods in the world. It was also the foundation for many civilizations. Here, consider aspects about this dietary staple, including the art of leavening, the religious and social roles of light and dark bread, and the artisanal bread movement. x
  • 14
    The Science and Secrets of Chocolate
    Today, chocolate is a multi-billion-dollar global industry. In this lecture, Professor Crittenden takes you back in time so you can follow chocolate's trek around the world, considering not only its history and chemical properties, but its role in the current global market in the form of powerful chocolate empires. x
  • 15
    Water: The Liquid of Life
    Of all the water on Earth, only a fraction of it is drinkable. How much water is used by humans throughout the world? How did bottled water become so popular? Why is water fluoridation so controversial? How can we work to conserve water, both as a nation and in our everyday lives? x
  • 16
    Beer, Mead, and the Fun of Fermentation
    From ancient Egyptian experiments to the 21st-century microbrewery down the street from your house, explore the intricate links between the fermentation of wheat and honey and human civilization. As you follow our love affair with beer and mead, you'll be surprised to learn just how accidental their discovery was. x
  • 17
    Humanity's Love of Wine
    Continue looking at our relationship with fermented beverages, this time with a look into the story of fermenting grapes into wine. Topics include the science behind viticulture and the production of different types of wine, the reasons winemakers are turning away from cork, and “retsina,” one of the oldest types of white wine. x
  • 18
    Coffee: Love or Addiction?
    Each year, over 500 billion cups of coffee are served. Reconsider this popular drink and its relationship with world history. Along the way, you'll explore the ways coffee is harvested, how caffeine works on your body and mind, popular ways to drink coffee, and the origins of the free-trade movement. x
  • 19
    The Roots of Tea
    What is the source of the nearly 1,500 different types of tea in the world? How did tea spread from Japan to Europe? What are the differences between green, black, and white teas? How was the tea bag accidentally invented? Is drinking tea good for your health? Get the answers in this lecture. x
  • 20
    The Fizz on Soda
    Soda was once an embodiment of the American dream. Now, it's one of the worst contributors to obesity-related diseases. Make sense of this fizzy drink by exploring its origins as patented medicine, the soda wars between Coke and Pepsi, and the health risks associated with its high sugar content. x
  • 21
    Food as Ritual
    Humans don't just eat for nutrition. It's a deeply symbolic activity as well. In this lecture, consider some of the many different categories of food rituals around the world, including fasting for Ramadan, making sugar skulls for the Day of the Dead, bobbing for apples during Halloween, and America's favorite fall feast: Thanksgiving. x
  • 22
    When People Eat Things That Aren't Food
    Sometimes, people consume things that are not considered food, from dirt to hair to human flesh. Professor Crittenden introduces you to some of the more outlandish dietary practices around the world, including placentophagy (in which a mother eats the placenta after giving birth) and anthropophagy (also known as cannibalism). x
  • 23
    Food as Recreational Drugs
    Throughout history, we've consumed food not just for nourishment, but also for psychological effects. In this lecture, go inside the world of recreational drugs, including psilocybin mushrooms, edible marijuana treats, and addictions to foods like chocolate or french fries. x
  • 24
    Food as Medicine
    Is there a substantial link between diet and disease prevention? Professor Crittenden explains the medicinal histories behind several foods. Among them are ginger (thought to help with digestive issues) and cinnamon (used in traditional Chinese medicine to treat various ailments), as well as goji berries, chocolate, and pomegranate. x
  • 25
    The Coevolution of Genes and Diet
    Biological and cultural evolution are not separate phenomena, and this is nowhere better exemplified than with diet. In this lecture, Professor Crittenden discusses the ways in which our genes and diet have co-evolved. You'll witness this fascinating process through examples of how our body evolved to metabolize (or not) enzymes like lactase and amylase, as well as omega 3 fatty acids. x
  • 26
    The Scoop on Poop
    There's a lot we can learn about the end point of nutrition. Here, trace the science and history of excrement, including its oldest fossilized forms (known as coprolites), the study of latrine systems in ancient Rome, and the important role played by gut bacteria in excrement production. x
  • 27
    The Gut Microbiome
    Your body can play host to anywhere from 30 to 50 trillion bacterial cells, the most species of which are in your gut. Learn how gut microbiota help us metabolize food and drugs, and defend us against pathogens. Put simply: these microbes are fellow travelers in human evolution. x
  • 28
    Brain Food
    There's data out there to suggest that it's possible to feed your brain. In this lecture on the links between diet and the brain, explore the role of hormones like insulin and leptin; unpack the tangled links between food cravings and addiction; and consider how the MIND diet can help delay neurodegeneration. x
  • 29
    You Are What Your Mother Ate
    Your diet as a fetus has a powerful influence on your life as an adult. What micronutrients are most important to your first nine months of life? What did a historic Dutch famine reveal about the consequences of sub-standard nutrition during pregnancy? What can we learn from studying heritable changes in gene expression? x
  • 30
    Civilization: Diets and Diseases
    Professor Crittenden explains the second and third epidemiological transitions in human evolution and the changing face of the world's disease-scape. First is the decline over the last two centuries of infectious disease and the rise of chronic degenerative diseases (like diabetes). Then there's the re-emergence of drug-resistant infectious diseases (like Zika). x
  • 31
    What the World Is Eating
    Take a fascinating tour of different meals from around the world to better appreciate the global tradition of eating. Cultural cuisines you explore are those listed by the United Nations as part of the world’s “intangible cultural heritage,” and include Japanese cuisine, Mexican cuisine, and French cuisine. x
  • 32
    The Overnutrition Epidemic
    According to the World Health Organization, most of the world's population now lives in countries where obesity kills more people than malnutrition. In this insightful lecture, explore the two-pronged pathway to global obesity: decreased physical activity and radical changes in diet (including the massive consumption of sugar). x
  • 33
    World Poverty and Undernutrition
    Every night, one in eight people goes to bed hungry. Get an eye-opening look at undernourishment in the developing and post-industrialized worlds. You’ll consider the two types of malnourishment, the concept of “plump poverty,” the roles played by urban slums and overpopulation, and ways we can work to eradicate world hunger. x
  • 34
    Should the World Eat Meat?
    In the first of two lectures on the politics of food, explore whether or not sustainable meat production is a myth or reality. What are the environmental costs of meat production? How can we rethink the way we house, feed, and raise livestock? Is too much meat bad for our health? x
  • 35
    Should We Be Powered by Plants?
    Turn now to the politics of eating a plant-based diet. What are the health benefits of vegetarianism and veganism? Why do people decide to follow this diet? What role does beauty play in food waste? What exactly is the controversy surrounding the organic foods movement and genetically modified organisms (GMOs)? x
  • 36
    The Future of Food
    Artificial meat. Bio-fortified crops. Vertical farms in the middle of cities. Bread grown from spent grains used in breweries. Crops grown with agroforestry methods. Conclude the course with a broad look at developing a food system that is better equipped to deal with population growth and diminishing resources. x

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Your professor

Alyssa Crittenden

About Your Professor

Alyssa Crittenden, Ph.D.
University of Nevada, Las Vegas
Dr. Alyssa Crittenden is an Associate Professor of Anthropology at the University of Nevada, Las Vegas, where she is also an Adjunct Associate Professor in the School of Medicine. She received her M.A. and Ph.D. in Anthropology from the University of California, San Diego. Dr. Crittenden’s focus in anthropology is on behavioral ecology and nutritional anthropology. She does field research among the Hadza...
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Reviews

Food, Science, and the Human Body is rated 3.8 out of 5 by 17.
Rated 4 out of 5 by from A good synthesis for the beginner The lectures are well organized and presented. As she says near the beginning and a few times along the way, the subject overlaps many disciplines, and she brings them together quite effectively. I took the audio course; video might be preferable if it includes a visual presentation of many of the unfamiliar names and terms involved. I appreciated her subtle sense of humor. She uses the word "actually" much more than necessary, apparently to mean something like "I'm telling you something you might find surprising or unexpected"--which indeed she does do, and often enough. Did you know that bananas don't grow on trees? (Actually, I did, long ago, but had forgotten.)
Date published: 2018-09-13
Rated 5 out of 5 by from very informative Was very broad based. I appreciated the depth of the knowledge and it was easy to watch
Date published: 2018-06-29
Rated 1 out of 5 by from Too preachy for me What a disappointment! The professor was obviously reading the text and there was far too much "so-and-so from this-university" over and over. Really off-putting. Also did we really need the "disclaimer" at the end of every single lecture? Are we elementary school students? And the last few lectures really grated on my soul -- instead of looking for ways to feed muliti-billions, why is there never any discussion on decreasing the population of the world? And do we really need to be lectured using the United Nations? Finally (and this is just being picky) she enunciated so many words (and mispronounced many) so why did she say "twenny" for twenty? Okay, so that might be stretching my critique but it was annoying. So other than my annoyance at the professor, the first half or so of the course was quite interesting (and this from a nutrition minor many moons ago, who also worked at a major university for a nutritional biochemist) but much of the second half was just annoying. I found I could not quite finish the course. Definitely a "miss" as far as I am concerned.
Date published: 2018-04-08
Rated 4 out of 5 by from Interesting but needs more. I am struggling with my ratings on this course. It is interesting and well presented but needs more details. It appears to me the subject is too big for 'only' 18 hours. I'm not sure if I should recommend this course or not. For an overview of how humans and diet evolved, the pros and cons of various diets, and the politics of sustainability the course works. But, as an overview only. I needed (at least wanted) more detail on how the various chemicals in our bodies interact with each other. In the context of only 18 hours it is probably as well done as possible. I felt I needed a preliminary course in human chemistry . The professor uses a lot of technical terms that are not explained in detail nor is there a glossary to explain them in the Guide Book. I took this course with "Food: A Cultural Culinary History". I did not give that course my highest ratings. I have come away with the feeling the courses together have a lot of unrealized potential. "Cultural Culinary" better organized and taught on a higher academic level; and this course with some addition of the body's chemistry and how various food elements (vitamins, proteins, bacteria, etc.) interact with each other, genetic predisposition, and the gut biome. I'm happy I took both courses; but seems like there is so much potential to put the two courses together with more detail to make a really great course. That is a lot of work, I know.
Date published: 2018-03-15
Rated 4 out of 5 by from Food for Thought Food, Science, and the Human Body strikes me as a very important course for personal and public awareness. There is much in its content which I will ponder further and which I will certainly want to watch and study more than once. As a presenter, Dr. Alyssa Crittenden spoke pleasantly and fluently, though occasionally (in my opinion) too rapidly. She is obviously a person with impressive multi-disciplinary interests and competencies. I appreciated her erudition and her sophisticated vocabulary, though I would have liked her to define even more of the terms, both scientific terms and slang or colloquial words, used in her lectures. I admired her forthright, non-judgmental, and professional manner when discussing controversial and/or potentially disturbing material. After preparing most of my present review, I had a look at how other purchasers of the course had commented about it on The Great Courses website. Frankly, I was amazed that a few seem to have felt that they had been reprimanded by a moralistic instructor. While I did note several problems with this course, didactic condescension on the part of the professor was not among them. I thought she discussed topics evenhandedly and maintained a matter-of-fact tone throughout. She abundantly identified the governmental, scientific, and/or international agency sources of the information she presented and seldom expressed unsupported personal opinions. Even when some of the data she had to share might have made me feel uncomfortable or even defensive, it was never she herself who caused that. Her Lecture #33 about “World Poverty and Undernutrition” provides a good example: much of what was shared therein was grim, and ways that the world or individuals might responsibly address crises were discussed; however, I never felt Dr. Crittenden was pushing her own viewpoints down my throat or nagging me to do more to help than I might already be doing. Where relevant, she shared optimistic news in addition to reporting food-related problems. Also, whenever discussing dietary choices or food politics, she consistently described varieties of attitude that different people adopt, and why they might tend to favour those, without being bossily prescriptive. I was disappointed that sometimes statements were left unexplained, were ambiguous, or were simply erroneous. I will give three examples (one for each type of “glitch”), though I could cite one or another from each of the thirty-six lectures: 1) At one point, both the DVD episode and the course book included a statement about humans eating “many tubers, such as potatoes, sweet potatoes, yams, and summer squash,” and that came despite tubers having just been described as underground features of plants—if there was a logical reason to put summer squash in the “tuber” category, it was never explained. 2) During Lecture #11 about the history of the spice trade, numerous references were made to events in widely separated centuries, and the ambiguity that bothered me here was that it wasn’t always specified which references were to centuries BC and which to centuries AD. 3) In Lecture #17’s discussion of wine, it was said that 15% of the world’s cork production was used to stopper wine bottles and that “the remaining 75%” went into shoes, baseballs, musical instruments, etc.—clearly, these percentages do not total 100%. If these lectures were delivered from a prepared teleprompter script, as I suspect was the case, then perhaps that script should have been better proofread before the lectures were recorded. Any course may forgivably include what I’ve called glitches. My concern here is that there was a large sum total, detracting from overall educational quality. Given that the title of the course admits such a broad scope for inquiry, I can’t claim that Dr. Crittenden didn’t “stick to the topic.” I will say that I personally would have preferred a tighter focus, even if the course had to be shortened; I then likely would have found the instruction even more effective and memorable than I did. I felt the professor’s best lectures were excellent indeed, including the opening nine when she was particularly describing her own research. Some of what was surveyed during other lectures, though, felt more to me like digressions or tangents than germane essentials. Yes, I did need to be informed about crucial aspects of the world’s food trade history, about diets and diseases, and about both undernutrition and overnutrition. No, I don’t think extensive details about soda pop, foods used as recreational drugs, and the obsessions of some people who swallow non-food items enriched my learning experience. Instead of shortening the course, it might have been even better simply to spend less time scrutinizing the less important topics. I would have welcomed discussion devoted instead to such things as milk in the adult human diet, government-issued food guides, controversies over the power of lobby groups, and the politics of school lunch programmes. In general, I was disappointed by the set of visual accompaniments to these DVD lectures. Some photos and other illustrations seemed to fit poorly with what was being said when they came on-screen; some that did fit were unfortunately repeated again and again. When a multi-storied garden construction was discussed at length during Lecture #33—not a construction especially easy to visualize—there wasn’t any illustration, either on-screen or in the guide book, at a point that seemed to “beg” for at least a sketch. A drawing of a naked man did indeed accompany a discussion of the difference between heme iron and non-heme iron in Lecture #29—it was not anatomically correct due to missing genital organs! Such prudery in a university-level science course? Despite the rather extensive critique I have felt led to give of Food, Science, and the Human Body, the course still does rank as “good” when I compare it to courses I have attended “live.” I am not sorry I purchased it, I do recommend it despite some reservations and, again, I consider it a very important course! In its favour is that it can be used as a companion course to Dr. Ken Albala’s excellent Food: A Cultural Culinary History, available from the same catalogue.
Date published: 2018-02-15
Rated 5 out of 5 by from A Fascinating Exploration Into Food & Our Bodies We all have to eat but how much do we know about the history of this essential activity and the science behind our foods and our bodies. Dr. Crittenden starts us out with our Hunter Gather ancestors and brings us up to the most modern innovations in food production and animal husbandry that have promise to feed and sustain a world of 10 billion. I enjoyed every lecture including the discussions on human digestion and how a cow processes its food. I learned a lot from this course and would recommend it to anyone. I had heard of bio-meat and shipping container farms but Dr. Crittenden provided a much more detailed description of these techniques.
Date published: 2018-01-26
Rated 1 out of 5 by from not what I expected I wanted a history of food but she spends most of her time talking about trade. After the first few lectures the course becomes a advertisement for fair trade and the professor's social ,economic and enviromental platform. The science is mostly trade and economics and very little how food effects the body
Date published: 2017-12-30
Rated 5 out of 5 by from One of the Teaching Co's best courses This is one of the Teaching Co's best courses--remarkably objective and informed about early human diets and what would be healthy for modern humans. It's also fascinating in its coverage of everything from the history of chocolate to the effect of mothers' diets on their children. Alas, when I mentioned a criticism of some diet fads the review robots gave me a Profanity X and wouldn't allow this--there was no swearing, just a scientific assessment, so I didn't know what to change and had to settle for this.
Date published: 2017-11-13
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