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“However, a balanced diet should still include unsaturated fats, which have been shown to increase levels of good cholesterol and help reduce any blockage in your arteries,” advises the NHS.

Many unsaturated fats can be found in the Mediterranean diet.

The Mediterranean diet is high in vegetables, fruits, legumes, nuts, beans, cereals, grains, fish and unsaturated fats such as olive oil.

It usually includes a low intake of meat and dairy foods.