A Mediterranean Diet for Healthier Aging and Lower Cancer Risk

The Mediterranean dietary pattern, identified by many studies as the healthiest way of eating, is thought to help reduce the risk of chronic diseases such as cardiovascular disease, diabetes, obesity and cancer, and potentially slow aging.

Also called the Mediterranean diet, the Mediterranean dietary patternemphasizes fresh vegetables and fruit, grains, legumes, nuts, fish and olive oil, with wholegrain bread preferred. Consumption of trans fats, animal fats, red meat, poultry, milk and dairy products is kept low. Numerous studies have investigated whether the lower rates of chronic diseases such as cardiovascular disease, diabetes, obesity and cancer in Mediterranean populations might stem from their diet, concluding that the Mediterranean dietary pattern is the healthiest way of eating.

Telomeres are found at the ends of chromosomes, the structures carrying our hereditary information, and play an important role in maintaining chromosome integrity. However, they shorten somewhat with each cell division. Many studies have shown that telomere shortening is closely related to cell lifespan and aging. This has made these regions important targets in cancer diagnosis and treatment, as well as in delaying aging.

Diet can affect telomere shortening

Telomere length varies among individuals and populations, which is attributed to lifestyle differences such as diet. Certain dietary changes are therefore thought to slow telomere shortening, potentially reducing the risk of chronic diseases such as cancer and delaying aging. Many studies have also shown that, at the cellular level, inflammatory processes (inflammation)accelerate telomere shortening, whereas anti-inflammatory effects slow it. Since the Mediterranean dietary pattern, in which fruit, vegetables and nuts play key roles, reduces inflammation and cellular damage, researchers proposed that it might be associated with longer telomeres and healthier aging. A comprehensive study was conducted, the largest to examine the relationship between a Mediterranean diet and telomere length.

The study included data from 4700 healthy women aged 42-70. Participants were scored according to their adherence to a Mediterranean diet, and telomere length was measured using blood tests. Analysis of these data showed that women with higher Mediterranean diet scores, meaning diets more closely resembling this pattern, had longer telomeres. No such association was observed with other dietary patterns, such as a Western diet.

In conclusion, a significant association appears to exist between a Mediterranean dietary pattern and telomere length, and therefore with cardiovascular disease, diabetes, obesity, cancer and other chronic disease risks, as well as aging. Adopting the Mediterranean diet, which many studies have identified as the healthiest dietary pattern, would therefore be a highly beneficial change for your health.