A British teenager collapsed and was rushed to the hospital this week after eating primarily chicken nuggets for the past 15 years. Stacey Irvine, 17, has reportedly survived on her nugget-heavy diet, occasionally supplemented by a bag of chips or piece of toast, since she was a toddler. Doctors have urgerd her to change her ways, but Irvine's case got us wondering: what would actually happen if you ate only one type of food for your entire life?
Depends on the poison you pick, but poison it most likely would be. According to Jo Ann Hattner, a nutrition consultant at Stanford University School of Medicine and former national spokesperson for the American Dietetic Association, choosing to eat only one fruit, vegetable or grain would lead to organ failure. Consuming only meat would eventually force your body to start munching onyour own muscles. And if you stuck solely to almost any one food (besides fruit), you would develop a serious case of scurvy.
"I wouldn't recommend this experiment," said Hattner, who also wrote "Gut Insight" (Hattner Nutrition, 2009), a book about digestive health.
No single vegetable or legume has all nine essential amino acids humans need to build the proteins that make up our muscles, Hattner said. That's why most human cultures, without knowing anything about food chemistry, have developed diets centered on complementary veggies that, together, provide all nine. At first, without all the right amino acids, your hair starts to lighten in color and your fingernails get soft. Much worse, "your lean body mass suffers. That doesn't just mean your muscles, but also your heart and your organs." Eventually, your heart shrinks so much you die; this happens, on occasion, with extreme cases ofanorexia nervosa.
Eating only one type of carbohydrate — just bread or pasta, for example — also causes organ failure, due to amino acid deficiency. On top of that, you'd get scurvy, a horrific disease brought on by lack of vitamin C, an essential component of many of the body's chemical reactions. Thanks tohighly unethical experimentscarried out on prison inmates in Britain and the United States in the 1940s, we know that scurvy hits after one to eight months of vitamin C deprivation (depending on the quantity one's body has stored to begin with). At first, you feel lethargic and your bones ache. Later, strange spots pop up all over your body and develop into suppurating wounds. You get jaundice, fever, tooth loss and, eventually, you die. [Why Don't Fad Diets Work?]
Life as a "meat purist" would also be a dead-end.
In addition to lacking vitamin C, most meats contain very few carbs — the easy-to-access packets of energy your body constantly requires to perform even the smallest tasks. "Without carbohydrates, you're going to start to break down some of your muscle mass to get the energy," Hattner said. Again, "muscle" doesn't just mean your biceps. You'll be eating your own heart, too.
However, there is one food that has it all: the one that keeps babies alive. "The only food that provides all the nutrients that humans need is human milk," Hattner said. "Mother's milk is a complete food. We may add some solid foods to an infant's diet in the first year of life to provide more iron and other nutrients, but there is a little bit of everything in human milk."
Technically, adults could survive onhuman milk, too, she said; the sticking point would be finding a woman who is willing to provide it (and enough of it). Lacking that option, the second-best choice would be mammalian milk, especially if it is fermented. "Yogurt, which is fermented milk, has a lot of bacteria that is good for the digestive tract," Hattner said.
These hypothetical scenarios aren't just whimsical speculation. In many parts of the world, people have no choice but to eat mostly one food: often, rice. Scientists are developing genetically modified rice that contains more vitamins and nutrients, especially vitamin A, in order to fight malnutrition.
Figuring out how to pack everything we need into one food is also useful for space travel, Hattner said. "The impetus of a lot of nutritional science is, 'How do we feedpeople in space?' Scientists are trying to increase the nutritional concentration of food so you don't have a lot of bulk."
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Natalie Wolchover
Natalie Wolchover was a staff writer for Live Science from 2010 to 2012 and is currently a senior physics writer and editor for Quanta Magazine. She holds a bachelor's degree in physics from Tufts University and has studied physics at the University of California, Berkeley. Along with the staff of Quanta, Wolchover won the 2022 Pulitzer Prize for explanatory writing for her work on the building of the James Webb Space Telescope. Her work has also appeared in the The Best American Science and Nature WritingandThe Best Writing on Mathematics, Nature, The New Yorker and Popular Science. She was the 2016 winner of the Evert Clark/Seth Payne Award, an annual prize for young science journalists, as well as the winner of the 2017 Science Communication Award for the American Institute of Physics.
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As a seasoned nutrition enthusiast with a deep understanding of dietary implications on health, let me delve into the intriguing case of Stacey Irvine, the British teenager who experienced health issues after consuming primarily chicken nuggets for 15 years. This incident prompts an exploration into the potential consequences of maintaining a monotonous diet and the broader implications for overall health.
Firstly, let's address the specific problems associated with an exclusive diet of chicken nuggets. Stacey's diet lacked the necessary variety and nutrients essential for maintaining optimal health. The human body requires a diverse range of nutrients, including vitamins, minerals, proteins, and carbohydrates, to function properly. Relying solely on one type of food, especially one lacking in essential nutrients, can lead to severe health issues.
Jo Ann Hattner, a nutrition consultant at Stanford University School of Medicine, emphasizes the dangers of such restrictive diets. Consuming only one type of food, whether it's meat, vegetables, or grains, can result in organ failure. For instance, a diet devoid of the necessary amino acids found in a variety of vegetables can lead to the deterioration of lean body mass, including muscles, heart, and organs.
The article also highlights the risks associated with exclusive carbohydrate diets, such as consuming only bread or pasta. A deficiency in amino acids can lead to organ failure, and the absence of vitamin C can result in scurvy, a debilitating disease with symptoms ranging from lethargy and bone ache to suppurating wounds and death.
Interestingly, Hattner notes that human milk is the only food that provides all the essential nutrients humans need. While it may sound unconventional, adults could theoretically survive on human milk. However, a more practical alternative is mammalian milk, especially if fermented, as seen in yogurt. Fermented milk products offer beneficial bacteria for digestive health.
The scenarios discussed in the article go beyond mere speculation, as in many parts of the world, people are constrained to diets centered around a single staple food, such as rice. Scientists are actively working on genetically modifying staple foods to enhance their nutritional content, addressing malnutrition concerns.
Moreover, the article emphasizes the relevance of these hypothetical scenarios in the context of space travel. Nutritional scientists are exploring ways to increase the concentration of essential nutrients in food to minimize bulk, a crucial consideration for feeding people during extended space missions.
In conclusion, the case of Stacey Irvine serves as a cautionary tale, illustrating the severe consequences of maintaining an imbalanced and monotonous diet. The human body thrives on variety, and a well-rounded diet is crucial for sustaining optimal health and preventing organ failure and nutritional deficiencies.
