Health Benefits of Plant-Based Foods


The purpose of eating is to refuel your body. It's similar to pulling up to the gas station and refueling your car. No matter what grade fuel you gas up with you're off and running in a matter of minutes. But let's take a look at this from a different perspective.

If you were a professional race car driver you'd want to make sure that you put the best available fuel into your Indy car, right? In fact, if you put the wrong grade fuel into these highly-refined machines you might cause more problems for yourself over time.

The same concept holds true for the human body. Nobody wants to become burdened with the troubles brought on by unhealthy foods and chronic diseases. We don't always make this connection though when it comes to the foods we eat. Often, we put regular unleaded fuel into our body when what we really need is high-performance racing fuel. Our bodies are race cars anyhow, not beat up old junkers.

So what exactly are these high quality, health promoting foods anyway? The answer is simple... whole, plant-based foods such as fruits, vegetables, whole-grains, nuts, seeds, and legumes. All of these foods are full of color, life, and disease-fighting ingredients your body needs.


Benefits of a Whole Foods, Plant-Based Diet

If you take a look below you'll see just how powerful whole, plant-based foods are. This graph shows the incidence of two of the biggest killers worldwide (heart disease & cancer) across 12 different countries in relation to the amount of whole, plant-based foods consumed by each of those countries. You can see as individuals consumed more plant-based foods (shown in green) their incidence of disease (shown in red) plummets!

Image credit: Diseaseproof


1) Plant-Based Diets Prevent and Reverse Heart Disease

  • Cardiovascular disease is the number one leading cause of death worldwide, accounting for over 17.5 million deaths annually according to the World Health Organization.
  • Cardiovascular disease is caused by an imbalance of an important substance called nitric oxide. Nitric oxide is produced and released by the endothelial cells lining the walls of your blood vessels. It is responsible for dilating your blood vessels, keeping your blood from getting sticky, and destroying the harmful build up of cholesterol plaques. Eating a high-fat, refined carbohydrate diet (i.e. meat, dairy, eggs, oil, processed foods) damages your endothelial cells which drastically reduces the amount of nitric oxide made by your body.1 Eating plant-based foods causes just the opposite effect, helping your body produce more nitric oxide.2
  • A 12-year study was conducted on diet and heart disease by Caldwell Esselstyn, Jr., MD which included 24 patients with severe coronary artery disease.3 All individuals were put on a whole foods, plant-based diet with less than 10% of their total calories from fat. Six patients were non-compliant and released from the study within the first 18 months. These six patients had a total of thirteen new cardiac events after twelve years. Seventeen of the remaining eighteen patients experienced no cardiac events after twelve years. For the eight years preceding the start of the study these same eighteen patients had a total of 49 cardiac events. Follow up tests at the 5-year mark confirmed complete reversal of coronary artery disease in 11 of the 18 patients and partial reversal in the rest.
  • Plant-based diets have shown reversal of atherosclerosis progression.4
  • Another interventional study conducted by Dr. Esselstyn resulted in the halting and reversal of heart disease in patients remaining compliant on his whole foods, plant-based diet, which excluded all animal and processed foods.5 Only one cardiac event (stroke) occurred in the 177 adherent patients in this study.

2) Plant-Based Diets Can Greatly Reduce Your Risk of Cancer

  • Only 2-3% of cancers are primarily due to genetics.6 We all have cancer causing genes inside our body, but these damaged cells don't always turn into cancer. Why not? Because what you eat actually determines whether or not these cancer causing genes are turned "on" or turned "off". Eating a whole foods, plant-based diet turns "off" these damaged genes.7 Plant-based foods are also high in fiber, anti-oxidants, and phytochemicals that help combat cancer.
  • A large study in Germany spanning an 11-year time frame showed a 25-50% decreased risk of death due to cancer in those on a plant-based diet.8
  • Plant-based diets have been shown to reduce the risk of cancer of the breast, prostate, colon, leukemia, ovarian cancer, and many others.9-13
  • Plant-based diets with no animal products in them (vegan) confer a greater reduction in cancer risk versus plant-based diets that include dairy and eggs in them (vegetarian).14

3) Plant-Based Diets Can Prevent and Reverse Type 2 Diabetes and Obesity

  • A review of 18 studies spanning a 25-year time span and including over 159,000 people found that a plant-based diet and high fiber intake was a protective factor against the development of obesity regardless of ethnic background.15
  • Women put on a low-fat, plant-based diet without portion restrictions had 53% more weight loss after only 14 weeks compared to women going on a standard diet recommended by the National Heart, Lung, and Blood Association that included low-fat dairy and lean meats.16
  • Individuals on a plant-based diet are approximately half as likely to develop type 2 diabetes compared to standard diets.4
  • A 22-week study of type 2 diabetics put on either a low-fat, plant-based diet or a diet recommended by the American Diabetes Association [ADA] (which included low-fat dairy, fish, and chicken) found those on a plant-based diet had nearly twice as much of a drop in their A1C levels, experienced over twice as much weight loss, had a 10.5% larger drop in their LDL "bad" cholesterol, and were able to reduce their diabetes medications by 43% compared to those on the ADA diet.17
  • An 18-week interventional study produced an average weight loss of 9.5 pounds, 0.7 percentage drop in A1C levels, and reduction in LDL "bad" cholesterol levels of 13 mg/dl for individuals following a low-fat, plant-based diet.18 There were no calorie restrictions or portion control requirements for those following a plant-based diet.
  • Type 1 diabetics can lower their insulin requirements by up to one-half according to Joel Fuhrman, MD when they adopt a plant-based diet.
  • Please visit the Food For Life - Resources for Diabetes page for more information and helpful resources on diet and diabetes.

4) Plant-Based Diets Offer Many Other Health Benefits

  • Those on a plant-based diet have half the risk of requiring emergency surgery for an appendectomy compared to meat eaters.19
  • Dr. Roy Swank was able to reduce the progression of disease in patients who had multiple sclerosis (MS) by putting them on a low-fat diet (less than 20 grams/day) consisting mostly of fruits, vegetables, and whole grains with only a minimum amount of non-fat dairy and non-fatty meat. 95% of his patients were still alive and physically active after 34 years on this diet.20
  • A study reviewing 87 surveys in 33 different countries comparing the ratio of vegetable to animal protein consumption and the resulting rate of hip fractures found that as consumption of vegetable protein went up, and animal protein went down, the rate of hip fractures and risk of osteoporosis was dramatically reduced.21
  • Consuming a plant-based diet can reduce your risk of developing kidney stones.22
  • Individuals who eat at least five or more servings per week of dark leafy greens (spinach, collard greens, kale, etc.) have an 88% reduction in risk of developing age-related macular degeneration.23
  • Those consuming a plant-based diet have less than twice the risk of developing dementia compared to those who include meat (including chicken and fish) in their diet.24
  • For every three additional servings of fruits and vegetables per day you eat your risk of stroke goes down by 22%.25
  • Following a plant-based diet has been proven to be beneficial in the treatment of rheumatoid and osteoarthritis leading to significant reduction in symptoms in both diseases.26-28
  • A 100% plant-based, low-salt, raw food diet led to significant improvements in symptoms in fibromyalgia patients, including weight loss and lower cholesterol levels.29
  • Shortness of breath & wheezing associated with asthma and allergies were remarkably reduced in children who consumed a diet high in fresh fruits, salad, tomatoes, and nuts over a 12-month period compared to children who consumed a diet higher in bread and animal fats (butter, margarine, and cheese).30
  • Plant-based diets have been shown to improve and even eliminate many autoimmune diseases (lupus, thyroid disease, inflammatory bowel disease, etc.).7
  • Women following a plant-based diet had nearly a two-fold decreased risk in developing gallstones than women who included meat in their diet.31
  • Individuals on a plant-based diet were found to have less negative emotion and better moods than regular meat eaters, which could lead to less depression.32
  • Plant-based diets are used to treat kidney disease, leading to delayed progression and complications of chronic kidney disease.33


The Fab Five - Whole Food, Plant-Based Food Groups


  • Include unlimited amounts
  • Eat at least one salad a day
  • Dark leafy greens are most healthful of all foods
  • Include lots of variety and color in your diet
  • Rich in antioxidants and other phytonutrients
  • High in potassium, vitamins A/C/E, and folic acid
  • High in fiber
  • Low in fat and calories



  • Include unlimited amounts
  • Include lots of variety and color in your diet
  • Fresh, whole fruit is the best choice
  • Rich in antioxidants and other phytonutrients
  • High in potassium, vitamin C, folic acid, and beta-carotene
  • High fiber food
  • Low in fat and calories
  • Contains 80% water and acts as great hydrator



  • 2-6 servings per day; serving size = 1/2 cup cooked, 4 oz tofu or tempeh, 8 oz soy milk
  • Beans, chickpeas, soy products, peas, and lentils
  • Rich in antioxidants and other phytonutrients
  • Excellent protein source
  • High fiber food
  • Good sources of calcium, zinc, iron, B vitamins, potassium, and zinc

Whole Grains

  • 5-6 servings per day; serving size = 1/2 cup cooked, 3/4 cup dry, or 1 slice
  • Whole grain/sprouted bread, brown rice, oats, quinoa, millet, etc.
  • Rich in B vitamins, iron, vitamin E, and magnesium
  • Good source of antioxidants like selenium
  • High fiber food
  • Low in saturated fat

Nuts/Seeds (Optional)

  • 1-2 oz or 1-2 tablespoons per day
  • Includes a variety of nuts/seeds and nut butters
  • Buy raw with no salt added
  • Good source of omega-3 fatty acids and lignans (ground flaxseed)
  • Rich in antioxidants like vitamin E, zinc, and selenium
  • Excellent protein source
  • High fiber food
  • High in calories and fat

Tips For Adopting a Whole Foods, Plant-Based Diet

1) Buy most of your groceries in the produce section, and limit the number of items you buy that come from a box, can, or package with a barcode on it.

2) Try and purchase organic, non-GMO fruits and vegetables when possible. It would be ideal if you could buy the top foods from the Environmental Working Group's dirty dozen list this way.

  • Anything you remove the skin on (watermelon, mango, avocado, banana, etc.) generally has fewer pesticides and other harmful chemicals in the edible portion itself and can be bought non-organic if preferred.
  • To learn more about this subject check out my article - Organic Foods - Are They Worth It?

3) At least 50% or more of your fruits and vegetables should be consumed raw. Consuming raw vegetables vs. cooked vegetables was found to protect slightly more against cancer in a review of several studies.34 You can also learn more about the raw vs. cooked food debate by reading my article - To Cook or Not To Cook - The Raw Food Dilemma.

4) Frozen fruits and vegetables are great to have on hand, and they still maintain a high nutrient content while being quick and convenient to use too.

5) Including starch-based, whole foods (brown rice, whole grains, sweet potatoes/potatoes, squash, etc.) is a healthy way of supplying calories to your diet. Your hunger will be satisfied while you remain trim and healthy. For more information on this topic visit Dr. John McDougall's site here.

6) Plant-based foods do not contain detectable levels of cholesterol. If cholesterol shows up on the nutrition label then the package you're looking at has animal products in it and it's best you avoid these items.

7) Incorporate fiber, raw veggies, and fruits into your diet gradually over 2-4 weeks in order to avoid unwanted side effects such as abdominal pain, bloating, and/or gas. Once your body gets used to more fiber these will go away, and both short- and long-term health will improve.

8) To achieve optimal health, you should consume at least 90% or more of your total daily calories from fruits, vegetables, legumes, whole grains, and nuts/seeds. If you have a chronic disease your best bet is to consume 100% of your total daily calories from these plant-based food groups, eliminating all animal and processed foods from your diet so your body can heal. You'll find the more you transition from animal-based foods to plant-based foods the healthier and happier you will become and the less you'll miss your old standbys.


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