What you choose to eat has profound effects on your overall health.
Research shows that dietary habits influence disease risk. While certain foods may trigger chronic health conditions, others offer strong medicinal and protective qualities.
Thus, many people argue that food is medicine.
Yet, diet alone cannot and should not replace medicine in all circumstances. Although many illnesses can be prevented, treated, or even cured by dietary and lifestyle changes, many others cannot.
This article explains the medicinal effects of food, including which foods should and shouldn’t be used for healing.
Many nutrients in food promote health and protect your body from disease.
Eating whole, nutritious foods is important because their unique substances work synergistically to create an effect that can’t be replicated by taking a supplement.
Although your body only needs small amounts of vitamins and minerals, they’re vital for your health.
However, Western diets — high in processed foods and low in whole foods like fresh produce — are typically deficient in vitamins and minerals. Such deficiencies can substantially increase your risk of disease (1).
Nutritious foods, including vegetables, fruits, beans, and grains, boast numerous beneficial compounds, such as antioxidants.
Antioxidants protect cells from damage that may otherwise lead to disease (5).
Fiber is an essential part of a healthy diet. It not only promotes proper digestion and elimination but also feeds the beneficial bacteria in your gut (10).
Thus, high-fiber foods like vegetables, beans, grains, and fruits help protect against disease, decrease inflammation, and boost your immune system (11).
The protein and fat in whole, nutritious foods play various critical roles in your body.
Omega-3 fatty acids, which are found in foods like fatty fish, help regulate inflammation and are linked to improved heart and immune health (18).
Summary Whole, nutritious foods boast vitamins, minerals, antioxidants, fiber, protein, and fat, all of which promote health and are key to optimal bodily function.
Notably, nutritious foods may decrease your risk of disease — while the opposite is true for highly processed foods.
Unhealthy diets high in sugary drinks, fast food, and refined grains are a main contributor to conditions like heart disease, diabetes, and obesity.
These processed foods harm your gut bacteria and promote insulin resistance, chronic inflammation, and overall disease risk (19).
A study in over 100,000 people found that every 10% increase in ultra-processed food intake resulted in a 12% increase in cancer risk (20).
Additionally, a study on worldwide mortality and disease showed that in 2017, 11 million deaths and 255 million disability-adjusted life years (DALYs) were likely due to poor diet (21).
DALYs measure the burden of disease, with one unit representing the loss of one year of full health (22).
On the other hand, research indicates that diets abundant in plant foods and low in processed products strengthen your health.
For instance, the Mediterranean diet, which is rich in healthy fats, whole grains, and vegetables, is linked to a reduced risk of heart disease, neurodegenerative conditions, diabetes, certain cancers, and obesity (23, 24, 25).
In fact, some diets may reverse certain conditions.
What’s more, nutritious eating patterns like the Mediterranean diet are tied to better self-reported quality of life and lower rates of depression than typical Western diets — and may even boost your longevity (30, 31, 32).
Such findings prove that robust diets indeed function as preventative medicine.
Summary Following a healthy diet can increase longevity, protect against disease, and improve your overall quality of life.
While some dietary choices can either prevent or increase your disease risk, not all diseases can be prevented or treated through diet alone.
Disease risk is quite complex. Although a poor diet can cause or contribute to illnesses, many other factors need to be considered.
Food cannot compensate for poor lifestyle choices, genetic disposition, or other factors related to disease development.
Though shifting to a healthier dietary pattern can indeed prevent disease, it’s critical to understand that food cannot and should not replace pharmaceutical drugs.
Medicine was developed to save lives and treat diseases. While it may be overprescribed or used as an easy fix for dietary and lifestyle problems, it’s oftentimes invaluable.
As healing does not hinge solely on diet or lifestyle, choosing to forgo a potentially life-saving medical treatment to focus on diet alone can be dangerous or even fatal.
While scientific evidence shows that food can aid various health conditions, anecdotal claims of curing or treating diseases through extreme dieting, supplements, or other methods are often false.
For example, diets advertised to cure cancer or other serious conditions are typically not backed by research and often prohibitively expensive.
Summary Although many foods have strong disease-fighting benefits, diet should not be considered a replacement for conventional medicine.
Transitioning to a diet based on whole foods can improve your health in countless ways. Foods that offer particularly powerful benefits include:
Simply transitioning to a diet rich in whole foods like fruits and vegetables is the simplest way to reap the medicinal benefits of food.
Summary Berries, cruciferous vegetables, fatty fish, and mushrooms are just a selection of the foods that offer powerful medicinal properties.
Food does much more than simply provide you with fuel. It may promote or worsen health, depending on what you eat.
A nutrient-dense diet of whole foods has been shown to prevent many chronic diseases and may help treat some conditions, such as type 2 diabetes.
Although it’s clear that following a nutritious diet is one of the most important factors in living a long, healthy life, keep in mind that you should not rely on food to replace conventional medicine.
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