Brenda Khan
The Mediterranean diet is a way of eating inspired by the traditional dietary habits of countries bordering the Mediterranean Sea, such as France, Spain, Greece, and Italy. It emphasizes plant-based foods, healthy fats, and moderate consumption of dairy, fish, and seafood. The diet is associated with numerous health benefits, including reduced risk of cardiovascular disease, weight loss, improved brain function, and lower all-cause mortality. There is no single Mediterranean diet, but general guidelines suggest focusing on healthy plant foods and minimizing highly processed foods. This diet has been recognized for its positive impact on health and was ranked as one of the best diets by the U.S. News and World Report.
| Characteristics | Values |
|---|---|
| Overall Health | Improves overall health, including brain health, heart health, sleep quality, and mental health. |
| Disease Prevention | Reduces the risk of chronic conditions such as heart disease, type 2 diabetes, certain cancers, obesity, and stroke. |
| Weight Management | Linked to weight loss and lower weight gain over time, reducing the chance of becoming overweight or obese. |
| Diet Composition | Emphasizes whole, minimally processed, plant-based foods, healthy fats, whole grains, fruits, vegetables, nuts, beans, lean proteins like fish and poultry, and low-fat dairy. |
| Dietary Exclusions | Limits added sugars, sugary beverages, sodium, highly processed foods, refined carbohydrates, saturated fats, and fatty or processed meats. |
| Flexibility | Not a single standard Mediterranean diet; variations exist due to differences in culture, ethnic background, religion, economy, geography, and agricultural production. |
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What You'll Learn
Heart health
The Mediterranean diet is recognised as a heart-healthy regimen. It lowers cardiovascular risk by limiting saturated fat and sugar consumption. It is also associated with a reduced risk of diabetes, Parkinson's disease, certain cancers, and cognitive decline.
There is no "official" Mediterranean diet plan, but it is typically based on the traditional eating habits of countries bordering the Mediterranean Sea, such as Greece, Italy, and Spain. It is usually high in vegetables, fruits, whole grains, beans, nuts and seeds, and olive oil. The foundation of the diet consists of plant-based foods, with moderate amounts of dairy, poultry, and eggs, and the occasional inclusion of red meat.
Healthy fats are a key component of the Mediterranean diet, with olive oil as the primary source of added fat. Olive oil is rich in monounsaturated fats, which have been found to lower total cholesterol and low-density lipoprotein (LDL or "bad" cholesterol) levels. Nuts and seeds also contain these healthy fats.
Fish is another important aspect of the Mediterranean diet, particularly fatty fish such as mackerel, herring, sardines, albacore tuna, salmon, and lake trout. These fish are rich in omega-3 fatty acids, a type of polyunsaturated fat that may reduce inflammation in the body. Moderate alcohol consumption, especially red wine, is also part of the Mediterranean diet, although it is optional. In moderate amounts, alcohol can reduce the risk of heart disease.
The Mediterranean diet has been shown to reduce the risk of cardiovascular disease, with studies indicating a lower number of heart disease deaths in Mediterranean countries. It has also been associated with improved surrogates of cardiovascular disease, such as waist-to-hip ratio, lipids, and markers of inflammation.
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Brain health
The Mediterranean diet has been linked to several health benefits, including lower overall mortality, a reduced risk of cardiovascular mortality, and a lower incidence of cancer. In recent years, the diet has also been associated with improved brain health.
The Mediterranean diet is primarily plant-based and rich in nutrients that are important for brain health. It consists of vegetables, fruits, legumes, nuts, whole grains, olive oil, beans, and fish, while limiting red meat. A 2017 meta-analysis found that older adults who followed the Mediterranean diet more closely had better cognition, with benefits noticed in measures of delayed recall and working memory. Another study published in 2018 found that those who adhered closely to the diet benefited from 1.5 to 3.5 years of protection against Alzheimer's disease.
The MIND diet, or Mediterranean-DASH Intervention for Neurodegenerative Delay, is a diet similar to the Mediterranean diet but more focused on foods and nutrients specifically known to support brain health. It includes green leafy vegetables, berries, beans, nuts, whole grains, olive oil, fish, and poultry. The MIND diet was specifically designed to improve brain function and prevent dementia. A 2023 study found that middle-aged adults who closely adhered to the MIND diet had faster information processing speeds and higher scores for working memory, verbal recognition memory, and attention.
Both the Mediterranean and MIND diets are anti-inflammatory and have been linked to improved cognitive health during midlife, particularly for women. These diets may contribute to gut health and exhibit anti-inflammatory effects that are crucial for protecting neuronal function. Additionally, the Mediterranean diet has been associated with improved mood and lower odds of depression and anxiety.
While diet is an important factor in brain health, it is just one component of a comprehensive healthy lifestyle. Engaging in physical activity and adopting other healthy lifestyle habits are also important for maintaining cognitive health as we age.
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Cancer risk
The Mediterranean diet is based on the traditional eating habits of countries bordering the Mediterranean Sea. It is often regarded as one of the healthiest diets by health organisations and dietitians. The diet includes plenty of fruits, vegetables, whole grains, beans, legumes, nuts, seeds, fish, poultry, and healthy fats such as olive oil. It limits processed foods, red meat, added sugars, and refined carbohydrates.
The Mediterranean diet has been linked to a reduced risk of developing cancer and improved outcomes for cancer survivors. Several studies have found that adhering to this diet may lower the risk of dying from any type of cancer. For example, a Harvard study published in August 2023 suggested that the Mediterranean diet may reduce the overall risk of cancer death by 28%. Additionally, a hospital study of 150 Iranian women showed that postmenopausal women who followed this diet had a 77% lower risk of breast cancer. A long-term study of 120,852 individuals over 20 years also concluded that the Mediterranean diet may reduce the risk of lung, postmenopausal breast, oesophageal, and stomach cancers.
The Mediterranean diet is rich in fibre, healthy fats, and anti-inflammatory foods, which are thought to contribute to its cancer-protective effects. Additionally, the diet's emphasis on plant-based foods may help protect DNA from damage that can lead to cancer development. It is important to note that while the Mediterranean diet may lower cancer risk, it is not considered an anti-cancer diet, and other lifestyle factors, such as physical activity, also play a role in cancer prevention.
Furthermore, the Mediterranean diet has been found to benefit cancer survivors specifically. An Italian study suggested that cancer survivors who followed this diet had improved overall health, better quality of life, and a reduced risk of death from all causes. The Mediterranean diet has also been shown to boost treatment effectiveness and potentially prevent cancer recurrence.
Overall, the Mediterranean diet is recommended by dietitians and nutritionists as a healthy eating pattern that may reduce cancer risk and improve outcomes for cancer survivors. However, it is always advisable to consult with a healthcare professional before making significant dietary changes.
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Diabetes
The Mediterranean diet is a popular choice for people with type 2 diabetes due to its heart-healthy benefits and ability to help manage blood sugar levels. This diet is inspired by the traditional eating patterns of countries bordering the Mediterranean Sea, including France, Spain, Greece, and Italy. It is rich in fruits, vegetables, whole grains, legumes, nuts, seeds, and heart-healthy unsaturated fats, while limiting red meat, sweets, refined grains, and high-fat dairy products.
One of the key advantages of the Mediterranean diet for people with type 2 diabetes is its positive impact on blood sugar control. Research has shown that this diet can effectively lower A1C scores, indicating better management of average blood sugar levels over time. This is achieved through a combination of high-fiber foods, such as whole grains, legumes, and fresh produce, which slow down the absorption of glucose, and the moderate inclusion of dairy, lean protein, and healthy fats.
The Mediterranean diet is also beneficial for weight loss, which is an important consideration for individuals with type 2 diabetes. By emphasizing nutritious and satisfying ingredients, this diet helps manage weight while also improving overall health. Additionally, the Mediterranean diet promotes the inclusion of heart-healthy fats, such as olive oil, nuts, and fish, which contribute to improved cardiovascular health and cholesterol levels.
When compared to other diets, the Mediterranean diet stands out for its effectiveness in managing diabetes. In a study comparing the Mediterranean diet with vegetarian, vegan, low-carbohydrate, high-protein, and low-glycemic index diets, participants following the Mediterranean diet experienced better blood sugar control and more significant weight loss. The Mediterranean diet's flexibility and inclusion of a variety of nutritious foods make it a sustainable and enjoyable choice for managing diabetes.
It is important to note that individuals with diabetes should consult their healthcare team before making significant dietary changes, especially if they are taking insulin or medications that affect blood sugar levels. The Mediterranean diet is a healthy and flavorful approach to managing type 2 diabetes, offering a balanced and flexible way to improve blood sugar control and overall health.
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Weight management
The Mediterranean diet has been linked to increased weight loss and a lower risk of gaining weight and belly fat. It is based on the traditional dietary patterns of people in Mediterranean countries like Spain, France, Italy, and Greece, and is characterised by an abundance of plant foods such as fruits, vegetables, legumes, whole grains, nuts, and seeds. Olive oil is the principal source of healthy fats, and dairy products, fish, poultry, and red meat are consumed in moderation. Red wine is also included, usually in small servings with meals.
The Mediterranean diet is a flexible and adaptable way of eating that focuses on nutrient-dense whole foods and does not require calorie counting or strict tracking of macronutrients. It promotes a high intake of fibre, which supports weight loss and provides a filling combo that improves satiety between meals. The diet also encourages mindful eating and paying attention to portion sizes, hunger cues, and ingredients.
To enhance weight loss, it is recommended to eat more plant-based whole foods, such as fruits, vegetables, whole grains, legumes, nuts, and seeds, while consuming moderate amounts of dairy, poultry, and red meat, and limiting processed foods and added sugars. Sugar-sweetened beverages, refined grains, processed meats, and other highly processed foods should be consumed rarely.
In addition to dietary changes, regular physical activity is a crucial component of the Mediterranean diet and weight management. It is recommended to get at least 150 minutes per week of moderate-intensity exercise, such as a 30-minute brisk walk five days a week or 22 minutes of moderate activity every day. Some examples of healthy physical activities that can be added to your routine include walking, running, bicycling, rowing, playing sports, and lifting weights.
The Mediterranean diet has been associated with a decreased risk of obesity-related disorders and non-communicable diseases. It may also help manage weight by reducing levels of inflammation, which could help prevent illness and contribute to overall health and longevity.
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Frequently asked questions
The Mediterranean diet is inspired by the traditional eating habits of people living in countries bordering the Mediterranean Sea, particularly the olive-growing cultures of Southern Italy and Greece. It is based on whole, plant-based foods and healthy fats, which are scientifically proven to reduce the risk of chronic conditions.
The Mediterranean diet includes fruits, vegetables, nuts, beans, whole grains including whole-grain pasta and breads, olive oil, red wine, and small amounts of fish, eggs, dairy, and meats.
The Mediterranean diet has been linked to improved heart health, reduced risk of type 2 diabetes, lower cholesterol levels, improved mental health, reduced risk of certain cancers, and better sleep quality. It is also associated with weight loss and a reduced risk of early death.
The Mediterranean diet helps keep cholesterol levels in check, enhances the body's ability to absorb blood sugar, and reduces damaging inflammation. It also limits added sugars, sugary beverages, sodium, highly processed foods, refined carbohydrates, and saturated fats, which can negatively impact heart health.
Start by adding in one healthy change at a time. For example, try oatmeal with fresh fruit and fat-free milk for breakfast, a vegetable salad with a drizzle of olive oil for lunch, and fruit for dessert. You can also try mixing and matching Mediterranean-inspired breakfast, lunch, and dinner ideas to get started.
