Hippocrates said long ago "Let food be your medicine, and let medicine be your food." This postulate can be fully applied to the Mediterranean diet, which is one of the healthiest types of diet with a beneficial effect on the cardiovascular system, Alzheimer's disease, allergies and healthy weight loss, and according to the latest research slows down brain aging. The basic characteristics of this diet are a high proportion of fruits, vegetables, grains and nuts. Of the fats, olive oil is used as an important source of healthy monounsaturated fats. Fish, poultry and dairy products are used sparingly, while the intake of red meat is only a few times a month. It is allowed to consume up to 4 eggs per week. Wine is also recommended, primarily red, but in moderation up to one glass a day. Preference is given to seasonal fruits in the winter months, citrus fruits, especially grapefruit, which is rich not only in vitamins but also in plant fibers, and pectin, which has been confirmed to have a positive effect on lowering cholesterol. Of the vegetables, this is an ideal time to consume cabbage such as broccoli, cauliflower, Brussels sprouts, which are very rich in phytochemicals, important substances for detoxifying the body. Vegetables should be consumed in stews or steamed in salads, seasoned with extra virgin olive oil. It is obtained by simple cold pressing and filtering the olives. The oil thus obtained is rich in chlorophyll and carotenoids, which have a strong antioxidant effect and prevent the oil from burning. Olive oil has many positive effects on health, so it is advisable to replace other fats with the same.All the positive features do not diminish the fact that the energy value of the oil is high and that it must also be consumed in moderation. It is healthiest when consumed without heat treatment. Therefore, it is not recommended to prepare fish, poultry and meat by frying in fat, but by steaming, stewing and grilling. Fish should definitely be consumed at least three times a week and it does not have to be more expensive than white fish, as blue fish is richer in essential and beneficial essential fatty acids. Sardines, mackerel and tuna are excellent choices. In the preparation of meals, it is desirable to use traditional Mediterranean herbs such as rosemary, basil, mint, parsley, chives and thyme, which in addition to enriching the taste also have a positive effect on health. From dairy products, moderate consumption of cheese and yogurt and kefir is allowed. Black and wholemeal bread is a recommendation of the Mediterranean diet, but although it is a healthier variant, it is desirable to be in moderation. Lunch or dinner can be enriched with red wine, which due to the content of resveratrol protects against heart disease and has a positive effect on increased levels of HDL ("good" cholesterol). What should always be kept in mind is that only the dose makes the poison, so moderately, varied and balanced plan meals according to the principles of a healthy Mediterranean diet.