Mediterranean Diet Benefits: Brain, Heart, and Vision Health

A healthy, nutrient-rich diet supports long-term brain and eye health and may help lower the risk of serious conditions like Alzheimer’s disease and other dementias, as well as vision disorders such as macular degeneration and glaucoma.

One eating pattern often highlighted for these benefits is the Mediterranean-style diet. Research links consistent adherence to this approach with lower overall mortality, reduced deaths from cardiovascular disease and cancer, and a decreased likelihood of developing chronic, degenerative illnesses.¹

Studies suggest this approach to eating may reduce the risk of advanced age-related macular degeneration (AMD) by as much as 39%. Researchers believe the benefit comes from the diet’s anti-inflammatory and antioxidant nutrients, which help protect the retina from damage.²

In addition, a large study of roughly 60,000 adults ages 40-69, published in BMC Medicine, reported a meaningful link between Mediterranean-diet adherence and dementia risk. Participants who followed the diet most closely had a 23% lower risk of developing dementia than those with the lowest adherence, regardless of genetic predisposition.³

What the Traditional Mediterranean Diet Includes

The traditional Mediterranean diet is characterized by:

• High consumption of extra virgin olive oil, vegetables, whole grains (cereals), fruits, legumes, and nuts
• Low intake of dairy products, poultry, meat, and meat products, and sweets
• Red wine in moderation, typically consumed with meals
• Moderate intake of fish and seafood

Cardiac Risk

A 2021 clinical trial found that people who followed a traditional Mediterranean diet most closely were less likely to experience sudden cardiac death compared with those whose eating habits least resembled this pattern.⁴

This landmark trial found that a Mediterranean-style diet supplemented with extra-virgin olive oil lowered the risk of major cardiovascular events, including heart attack, stroke, and cardiovascular death, by 31%.⁵

The Mediterranean eating pattern is generally characterized by minimal red meat, frequent fish and seafood, modest amounts of dairy, and extra-virgin olive oil as the primary daily source of fat.⁶

People who closely follow a Mediterranean-style diet typically consume more omega-3 polyunsaturated fats (PUFAs) and monounsaturated fats (MUFAs), while keeping omega-6 fats relatively lower (often linked with diets high in refined carbohydrates). This pattern also tends to produce a higher ratio of monounsaturated to saturated fats (SFAs).⁷

Of all the diets reviewed, the Mediterranean diet is clearly the winner for achieving longevity and heart health.

Extra Virgin Olive Oil

Rather than butter or margarine (avoid margarine), extra virgin olive oil is a staple of the Mediterranean diet. Studies suggest it can:

• Improve lipid profiles, including decreasing LDL (“bad”) and increasing HDL (“good”) cholesterol⁸
• Lower post-meal glucose levels⁹
• Help reduce chronic inflammation and oxidative stress, key drivers behind many chronic conditions, including Alzheimer’s disease, heart disease, type 2 diabetes, arthritis, metabolic syndrome, and certain cancers.¹⁰
• Oleic acid, the main fatty acid in olive oil, may help lower inflammation markers such as C-reactive protein (CRP).¹¹
• Reduce blood clot formation¹²
• Reduce high blood pressure¹³
• Aid in preventing breast cancer¹⁴
• Help prevent arrhythmias¹⁵
• Fight damaging oxidative stress¹⁶
• Lower heart attack and stroke risk, in part by lowering inflammation and raising HDL cholesterol levels.¹⁷
• Help lower the risk of Alzheimer’s disease and cognitive decline, potentially by decreasing beta-amyloid plaque buildup, neuroinflammation, and oxidative stress.¹⁸
• Lower risk of liver disease¹⁹
• Reduce risk of depression²⁰
• Help support rheumatoid arthritis management. A 2023 study linked olive oil intake with lower inflammatory markers and reduced disease severity in people with rheumatoid arthritis, especially among those with more severe disease activity.²¹
• Reduce the risk of ulcerative colitis and inflammatory bowel disease.²²
• Be a better choice for cooking than many common vegetable oils. It is rich in monounsaturated fat, which is generally more heat-stable and less likely to break down into harmful compounds at higher temperatures than oils with lower heat tolerance.²³

Vision Health

The Mediterranean diet supports eye health by reducing the risk of age-related macular degeneration (AMD), cataracts, and dry eye syndrome. This diet is rich in antioxidants, healthy fats, and nutrients that help protect against oxidative stress that can damage the retina.²⁴

In one study (Merle et al., using data from the Rotterdam and ALIENOR studies), greater adherence to the Mediterranean diet pattern was associated with a 41% lower risk of developing advanced AMD compared to low adherence, including a reduced risk of geographic atrophy.²⁵

In the study by Hogg et al., researchers found that higher adherence to the Mediterranean diet decreased the odds of developing the neovascular form of AMD by 48%. Patients with higher Mediterranean Diet Scores were also 20% less likely to have large drusen in the retina than those with low scores.²⁶

Components for Eye Health

• Leafy greens and colorful vegetables contain lutein and zeaxanthin, which help protect the retina by acting as antioxidants and filtering UV and blue light.
• Essential fatty acids (omega-3): found in fatty fish such as salmon, sardines, and mackerel. Omega-3 fatty acids may help reduce dry eye symptoms and inflammation.
• Olive oil: the primary fat source, providing antioxidants and healthy monounsaturated fats.
• Nuts, seeds, and legumes: provide zinc and vitamin E, which support ocular health. Omega-3 PUFAs have demonstrated antithrombotic activity and can inhibit neovascularization in patients with wet AMD and diabetic retinopathy. Saturated fatty acids (SFAs), on the other hand, may increase oxidative stress in retinal pigment epithelium (RPE), which can ultimately contribute to vision loss.²⁷

Other Healthy Lifestyle Choices

• Wear sunglasses when outdoors
• Limit screen time when possible
• Stay physically active
• Include foods such as vitamin E-rich almonds and vitamin A-packed sweet potatoes
• Do not smoke. Smokers have a higher risk of AMD progression.

Supplementation

Supplementation with nutrients such as lutein, zeaxanthin, vitamins C and E, and zinc has been shown to significantly reduce the risk of AMD progression.²⁸

Suggested Supplements to Consider

Dr. Grossman’s Complete Eye Formula 2oz (oral spray)

Dr. Grossman’s Meso Plus Formula with Astaxanthin – 90 vcaps (3-month supply)

Advanced Eye & Vision Support Formula (whole food) 60 vcaps

ReVision Formula (wild-crafted herbal formula) 2 oz – based on classic Chinese medicine Liver tonic formula to help support healthy circulation and blood flow throughout the eyes and body.

Dr. Grossman’s Blood Vessel Control Formula 2oz – helps reduce the risk of unwanted blood vessel growth, supports healthy circulation, reduces inflammation, and more.

Dr. Grossman’s Bilberry/Ginkgo Combination 2oz (60ml) – helps support healthy circulation, and strengthens blood vessels and capillaries.

Dr. Grossman’s Whole Food Organic Superfood Multi-Vitamin 120 Vcaps – whole food, organic, GMO-free multivitamin.

H2 Elite Molecular Hydrogen 60 tabs

NMN Wonderfeel Capsul 60 vegcaps – helps protect ganglion cells in the retina and optic nerves from damage, reduces inflammation, supports the immune system.

Supplement Packages

AMD Package 1 (3-month supply)

Brain and Memory Support Package 1

Retinal Circulation Package

Recommended Books

Natural Eye Care: Your Guide to Healthy Vision and Healing

Natural Brain Support: Your Guide to Preventing and Treating Alzheimer’s, Dementia, and Other Related Diseases Naturally

Natural Parkinson’s Support: Your Guide to Preventing and Managing Parkinson’s