Leena Watts
The word diet has evolved over the centuries, with the term first appearing in English in the 13th century, derived from the Greek diaita, meaning manner of living. In ancient Greece, the ideal body was male: slim, muscled, and beautiful. Early Christian concepts of gluttony and morality also influenced societal views on food and weight, with fatness being seen as a sin. In the early 1900s, the term diet took on a new meaning, referring to restricted food intake to lose weight or change one's physique. This shift was accompanied by the emergence of fad diets, such as Fletcherism, which involved chewing each mouthful 32 times and spitting out the rest. Today, social media has further fuelled diet culture, with a constant stream of new norms and trends. While the average American consumed 2,481 calories a day in 2010, about 23% more than in 1970, the types of food contributing to this have changed, with more grains, oils, and processed foods being consumed.
| Characteristics | Values |
|---|---|
| Origin of the word "diet" | Ancient Greece |
| First appeared in English | 13th century |
| Original meaning | The kind and amount of food and drink consumed |
| Modern meaning | Restricted food intake to lose weight or change physical appearance |
| Diet culture in ancient Greece | The ideal body was male: slim, muscled, and beautiful |
| Diet culture influenced by Christianity | Gluttony, temptation, and morality were condemned, shaping Western thoughts on food and weight |
| First diet book | "The Art of Living Long" by Italian Luigi Cornaro in 1558 |
| Influence of social media | Dieting and exercising have become a culture, with social media making fad diets more prevalent |
| Changes in food consumption over time | Increased consumption of cheese, yogurt, grains, corn products, cooking oils, calories; decreased consumption of milk |
| Shifts in food groups | Increased share of calories from flours, grains, fats, and oils; decreased share from meats, dairy, sweeteners, fruits, and vegetables |
| Role of government | The Federal government has provided dietary advice for over 100 years, with a focus on food groups, food safety, and preventing nutrient deficiencies |
| Nutrition guidance in the US | A turning point occurred in the 1970s with the Senate Select Committee on Nutrition and Human Needs, linking diet to health and "Nation's killer diseases" |
| Dietary Guidelines for Americans | Focus on dietary patterns and their impact on overall health status and disease risk, taking a lifespan approach |
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What You'll Learn
The original meaning of 'diet'
The word "diet" was first used in English in the 13th century, derived from the Middle English "diete" or "day's journey", and the Latin "dieta" or "daily regimen". It originates from the Greek "diaita", which means "manner of living". In ancient Greece, the ideal body was male: slim, muscled, and beautiful. Early Christian concepts of gluttony and morality also influenced Western thought, condemning fat as a sin.
The original meaning of the term "diet" refers to the total amount of food and drink consumed by a person or animal for a special reason, such as improving their health. It can also mean habitual nourishment. This meaning has been lost to popular culture, which now associates the word "diet" with restricting food intake to lose weight or change one's physical physique. This shift in meaning occurred in the early 1900s.
The first diet book, "The Art of Living Long", was published in 1558 by Italian Luigi Cornaro, who advised limiting oneself to 12 oz of food and 14 oz of wine a day. The next notable diet book, "The Natural Method of Curing the Diseases of the Body", was published in 1730 by Dr George Chyne, who wrote about his diet of only milk and vegetables. After returning to normal food, he regained the weight and became a lifelong vegetarian.
The idea of an "ideal body type" emerged in the mid-1800s, with the thin ideal popularised by Lord Byron, who is known for his extreme diet of starving himself and then binge eating. This was further propagated by the Empress of Austria, Elizabeth Amelie Wittelsbach, who maintained a small, frail physique through extreme measures such as long hikes, horseback riding, gymnastics, starvation, and the use of emetics to induce vomiting.
Over the years, the diet industry has experienced massive growth, fuelled by social media and pop culture. People are always seeking new and better ways to maintain their health, and dieting and exercising have become a culture in themselves. While the original meaning of "diet" has been obscured, it is important to remember that a balanced and diverse diet, along with regular exercise, is the key to maintaining a healthy weight and lifestyle.
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Ancient Greek influence on diet culture
The word "diet" and the concept of dieting as we know it today has its roots in ancient Greece. Ancient Greek influence on diet culture has had a significant and long-lasting impact, with some biases still prevalent in modern times.
The ancient Greeks viewed dieting as a holistic approach to physical and mental health. They believed that a healthy mind and a healthy body were interconnected and crucial for a healthy society. This philosophy considered the importance of both physical activity and a nutritious diet. Athletic competitions were integral to ancient Greek society, and their active lifestyles, including extensive walking and physical work, contributed to their overall well-being.
The ancient Greek diet consisted of whole foods with an emphasis on local and plant-based sources. Vegetables played a significant role, including cabbage, onions, garlic, turnips, radishes, carrots, parsley, spinach, and various leafy greens. Legumes, such as lentils, chickpeas, and peas, were essential sources of protein and had been cultivated in the region since prehistoric times. Ancient Greeks also consumed fruits, grains (mainly wheat and barley), olive oil, fish, eggs, and dairy. Their diet was closely tied to their lifestyle, philosophy, and social norms, with shared meals being vital for socialising and philosophical discussions.
In ancient Greece, the ideal body was male, characterised by a slim and muscular physique. This created a disparity where women were expected to aspire to a standard that was inherently more challenging for them to achieve. This dynamic has been reflected in modern diet culture, where the pressure to attain an "ideal body" often disproportionately affects women. Additionally, early Christian concepts of gluttony and morality further shaped Western thought, associating fatness with sin, which has persisted for millennia.
Over time, the term "diet" has evolved. In the early 1900s, the term took on a new meaning, shifting from referring to the total amount of food and drink consumed to specifically indicating a restricted food intake for weight loss or changing one's physical appearance. This shift marked the beginning of diet fads and the commercialisation of dieting, with the first diet book, "The Art of Living Long" by Italian Luigi Cornaro, published in 1558.
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The diet industry and the rise of social media
The diet industry has experienced massive growth and constant change over the years. The rise of social media has played a significant role in shaping the modern diet industry, with dieting and exercising becoming a culture in itself. Social media platforms have been accused of distorting reality by promoting unrealistic body image ideals and influencing disordered eating behaviours. The term "diet culture" refers to a set of beliefs that values thinness, appearance, and shape above health and well-being. This culture has been amplified by social media, with influencers and models portraying unachievable weight loss goals and unhealthy eating patterns.
The influence of social media on the diet industry is evident in the prevalence of "diet culture" messages and "fat talk". Individuals are conditioned to believe that thinness and dieting equate to health and moral superiority. Social media platforms normalise negative self-talk and the labelling of certain foods as "good" or "bad". This can lead to disordered eating behaviours, such as orthorexia, which is characterised by an excessive preoccupation with healthy eating. The constant exposure to idealised bodies, health foods, and weight loss messages on social media can contribute to body image concerns, eating disorders, and psychological distress.
Social media has also changed the way information is shared and consumed, with a rapid increase in self-proclaimed "influencers" seeking to influence opinions and providing nutritional or dietary guidance without qualified expertise. The ease of content sharing has led to a flood of potentially harmful or misleading information about diets and weight loss. Additionally, edited and unrealistic social media posts contribute to the spread of harmful content, as they encourage comparisons to physically unachievable appearance ideals, leading to dissatisfaction and negative impacts on mental health.
While social media can have negative impacts on body image and eating behaviours, it also provides an opportunity to promote positive and healthy diet culture. By embracing natural and unedited photos, individuals can create a happier and healthier society. Seeking qualified health professionals for nutritional advice and developing a healthy relationship with food are important steps in mitigating the adverse effects of the diet industry and social media.
In addition to the influence of social media, the diet industry has also been shaped by historical figures and cultural trends. For example, Lord Byron, considered the most beautiful man by the Victorians, popularised the vinegar diet, which involved drinking vinegar and eating vinegar-soaked potatoes. The idea of "ideal body types" emerged in the mid-1800s, with the thin ideal becoming prevalent in the mid-19th century, giving rise to the first "diet influencer". Diet books, such as "The Art of Living Long" by Luigi Cornaro, also contributed to the evolution of the diet industry, promoting restricted food intake and specific dietary practices.
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The shift to processed foods
The shift from consuming pre-agricultural wild foods to post-industrial semi-processed and ultra-processed foods in the Western world has occurred within the last 200 years. This shift has been driven by technological advances in food processing and preservation following the Industrial Revolution. While processed foods have contributed to food security and nutrition security, their excessive consumption has been linked to negative health outcomes.
The consumption of animal meats, for example, has been altered by modern food-processing techniques. Data suggests that the fatty acid profile of domesticated, factory-farmed meat is heavily enriched with saturated fatty acids at levels not found in pre-agricultural wild foods. The year-round consumption of SFA-enriched meats is not typical of the early hominid diet. Additionally, the majority of beef consumed in the US today is derived from grain-fed, factory-farmed cattle, which have a higher SFA content and lower content of beneficial fatty acids compared to grass-fed cattle.
The average American consumed 2,481 calories a day in 2010, about 23% more than in 1970. Nearly half of those calories came from just two food groups: flours and grains (23.4%) and fats and oils (23.2%), with significant contributions from vegetable oils like soybean, corn, and canola. While butter consumption has remained relatively stable, margarine use has declined sharply.
The consumption of ultra-processed foods, such as processed meats and potato chips, has been associated with weight gain and an increased risk of chronic diseases. Studies suggest that higher consumption of ultra-processed foods is linked to a diet lacking in important nutrients, with decreased intakes of fiber, zinc, potassium, and various vitamins. Additionally, ultra-processed foods have been associated with a higher risk of all-cause mortality.
In conclusion, the shift to processed foods has had significant implications for human health. While processed foods have improved food security and nutrition security, their excessive consumption has been linked to negative health outcomes, including weight gain, nutrient deficiencies, and increased risk of chronic diseases and all-cause mortality.
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Dietary advice from the Federal government
The Federal government has provided dietary advice to the public for over a century. The earliest guidance focused on food groups, food safety, food storage, and ensuring adequate mineral and vitamin intake to prevent diseases caused by nutritional deficiencies. The format of delivering this information has evolved from reports and posters to brochures, websites, and social media.
The specific messaging has changed over time to incorporate advances in nutrition science and our understanding of the role of specific foods and nutrients in health and disease. The 1980 Dietary Guidelines for Americans, for instance, reflected evolving scientific evidence and shifted the focus from nutrient adequacy to the impacts of diet on chronic diseases. These guidelines recommended seven ways to have a good diet, including eating a variety of foods, avoiding excessive fat and cholesterol, and reducing sugar intake. They were, however, met with controversy, leading to the establishment of an external advisory committee to incorporate outside scientific expertise in future revisions.
The 1985 Dietary Guidelines served as a framework for consumer nutrition education and were also used by scientific, consumer, and industry groups. The 1990 revision promoted enjoyable and healthful eating through variety and moderation rather than dietary restriction. The 2000 dietary guidelines further shifted perceptions by recommending whole grains over refined grains, emphasizing their role in improving overall health and addressing issues like obesity and diabetes.
The most recent guidelines in 2020, amidst the COVID-19 pandemic, also sparked controversy due to concerns about industry influence and the omission of certain topics like red meat and salt consumption. Despite the shifting approaches, the guidelines have consistently aimed to provide evidence-based advice on what to eat and drink to promote health and prevent disease. They form the basis for federal food, nutrition, and health policies and programs, as well as nutrition education initiatives for the public.
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Frequently asked questions
The word 'diet' refers to the kind and amount of food and drink consumed by a person or animal for a specific reason. The word first appeared in English in the 13th century, derived from the Greek 'diaita', meaning "manner of living".
The term 'diet' initially referred to the total amount of food and drink consumed. In the early 1900s, the meaning shifted to imply restricting food intake to lose weight or alter one's physical appearance.
Ancient Greeks associated the ideal body with the male form, which was slim and muscular. Early Christian concepts, on the other hand, condemned fatness as a sin, influencing Western thoughts on weight and food for centuries. One notable ancient diet is Lord Byron's vinegar diet, which involved consuming vinegar diluted in water and eating vinegar-soaked potatoes.
Diets have evolved significantly over the years. In the past, diets were influenced by regional and seasonal availability of food. Today, diets are often driven by health trends, weight loss goals, and the influence of social media.
Modern diets vary widely and are influenced by numerous factors. Some examples include the Mediterranean diet, juice cleanses, liquid diets, pre-workout diets, and fad diets promoted on social media.
