Styles of eating have evolved significantly over the past century, with various approaches gaining popularity. Understanding the historical context behind these protocols and evaluating their effectiveness and safety is essential for making informed dietary choices. Let’s explore different nutrition philosophies, their historical significance, and identify their benefits or potential risks.

Mediterranean Diet (1920s-present):

The Mediterranean diet has been practiced for centuries; however, it was originally identified by researchers as a beneficial eating style in the 1920s when researchers noted the low rates of cardiovascular disease in Mediterranean populations. This diet emphasizes whole foods, including fruits, vegetables, whole grains, lean proteins, and healthy fats. Numerous studies have shown that the Mediterranean diet is associated with reduced risks of heart disease, certain cancers, and overall mortality. Although its effectiveness is supported by extensive research and expert consensus, there is debate regarding the current forms and quality of ingredients used in the modern, Western diet. For example, olive oil has been grown, produced, and consumed locally for centuries. However, in our modern era of mass production and international distribution, olive oils can be made from combinations of olives grown from around the world and processed using heat, which can reduce the health benefits associated with olive oil. Furthermore, rustic or artisan breads and pastas made from low-gluten wheat that was traditionally consumed in the Mediterranean diet have been replaced with modern, high-gluten flower, which may increase intestinal inflammation or exacerbate conditions such as diabetes or Celiac disease.

Low-Fat Diet (1970s-1990s):

In the 1970s, low-fat diets gained popularity to combat heart disease and obesity. This approach advocated for minimizing dietary fat intake, with an emphasis on carbohydrates. However, subsequent research and systematic reviews have challenged the effectiveness of low-fat diets in promoting weight loss and improving cardiovascular health. Current dietary guidelines have shifted focus towards healthier fat sources and overall dietary balance. Recent movements exist to reduce or eliminate seed and nut oils (ie Canola, Corn, Vegetable (soybean), Peanut, Sunflower, etc) that have been previously advertised as “heart healthy” over the past 50 years. Some of the potential negative effects of seed oils could include:

1). Excessive amounts of Omega-6 fatty acids and linoleic acid that displace the healthy Omega-3 to Omega-6 ratios in our bodies.

2). Oxidization during processing, storage, and when heated, causing human cellular damage.

3). Potentially contributing to multiple human neurological and metabolic disorders.  

There is still a need for additional research on this topic to definitively determine if seed and nut oils are helpful, harmful, or benign. The assertion popularized in the 1970’s that consuming animal fats increases the risk of cardiovascular disease (which guided the low-fat diet trend) has also been under recent scrutiny. It is helpful to remember that correlation vs. causation are two, very different justifications that need to be delineated through non-biased research. Correlative connections might indicate a connection and can be helpful to promote more investigation and research on a topic, but it does not necessarily mean that “a + b = c”. Do your own investigation, get lab work done to determine your lipid levels and cardiovascular risks, read the academic literature for and against seed and nut oils, and determine what is right for you.

Low-Carb Diets (Atkins, South Beach, Ketogenic, Carnivore) (1990s-present):

Low-carbohydrate diets, such as the Atkins and South Beach diets, gained prominence in the 1990s. More recently, Ketogenic and Carnivore diets have been trending recently among elite athletes as well as everyday people. These diets restrict or eliminate carbohydrates while allowing higher protein and fat consumption. Some studies have shown short-term weight loss benefits of low-carb diets. However, concerns regarding their long-term sustainability and potential health risks, such as nutrient deficiencies and cardiovascular risks, have been raised. On the other hand, emerging research is providing evidence to show that significantly lower amounts of essential vitamins are necessary (such as Vitamin C) when carbohydrates are eliminated from the diet. Furthermore, daily vitamin and micronutrient needs can be met through the consumption of organ meats or desiccated (dried) organ supplements. It is important to consider individual needs and seek professional guidance when adopting a high-fat and/or high-protein, low-carb approach. For example, high protein diets are not recommended for those who have kidney disease or are on dialysis. Long-term restriction or elimination of carbohydrates should be managed using frequent glucose (blood sugar) checks, daily blood pressure monitoring, and electrolyte and metabolic lab monitoring, especially if you are diabetic or take medications for other health issues, such as blood pressure, thyroid, etc.  

Plant-Based Diets (Vegetarian, Vegan) (20th century-present):

Plant-based diets have a long history, with vegetarianism and veganism gaining popularity over the past century. Vegetarian diets exclude meat but may include animal products like eggs and dairy, while vegan diets avoid all animal-derived foods. Research has shown that well-planned plant-based diets can provide adequate nutrition and offer health benefits, such as reduced risks of heart disease, obesity, and type 2 diabetes. However, attention must be given to ensure sufficient intake of essential nutrients like vitamin B12, iron, and omega-3 fatty acids. Furthermore, there has been some recent criticism of vegetables by health advocates as a “health food”, claiming that vegetable stems and leaves contain toxic chemicals to prevent them from being eaten that can cause vitamin and mineral loss in the body once consumed. Furthermore (and maybe more important), vegetables may contain unhealthy levels of glyphosates (harmful chemicals found in pesticides). It is important to note for ANYONE who consumes fruits and vegetables in their diet to consider consuming organic, locally sourced, non-GMO produce and to thoroughly wash (and peel the skin if the fruit or vegetable may have been exposed to chemical pesticides) before consumption.

Intermittent Fasting (20th century-present):

Intermittent fasting involves alternating periods of fasting and eating within specific time windows. For example, this could include scheduling a daily eating window of 8 hours followed by 16 hours of fasting. Some intermittent fasters subscribe to the “One Meal A Day” (also known as OMAD) philosophy, consuming all their daily calories in one meal and then fasting until that same time the next day. The intermittent fasting approach has gained popularity in recent years, with some studies suggesting potential benefits for weight loss, metabolic health, and cellular rejuvenation. However, long-term effects and individual suitability require further research. Be advised that limiting your eating window will likely reduce your daily, total caloric intake. This might produce short term results of weight loss but put you at risk for long-term caloric deficits that can affect energy levels and cause muscle loss or nutritional deficiencies. Also, there is some emerging evidence that eating in the morning instead of later in the day could be beneficial due to cortisol levels and insulin sensitivity, so the timing of meals might be a factor as well. It is important to approach intermittent fasting with caution and consider your individual needs and lifestyle factors.

Conclusions:

I believe there are unique and helpful benefits and lessons to be learned from each of these methods. While I don’t believe in a “one-size-fits-all” method, I do believe that some methods are more effective than others if your goal is to increase lean muscle mass, improve metabolic health, and decrease overall body fat. Looking at the health data for the average American, it’s obvious that the typical American diet consisting of fast-food, high-sugar, and low-nutrient dense foods isn’t working. Americans are more obese with more chronic illnesses than ever before. For the safest and most effective results, new methods of eating should be compatible with your goals and your current health status. It would be best to be monitored by an expert in the fields of nutrition and medicine to ensure you minimize any potential harm from foods that are not compatible with any medications or chronic illnesses you might have. That being said, the internet has opened up a nearly limitless portal of information at our disposal. Do your own homework and start considering if the foods you are currently eating could be replaced with a healthier option. Make small changes at a time and track how you feel after a week or two. Then, make another change until you find what works best for you. While we would all like to look and feel our best, implementing small changes can help us take steps to “Be Better”. Comment below to share with our community if you’ve found an eating strategy that works for you.

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