A study conducted over 20 years has not found a link between a person's diet during their midlife and their risk of developing dementia. An "Mediterranean diet" doesn't reduce the chance of getting dementia, as an 20-year study conducted in Sweden suggests. Neil deGrasse Tyson tells Bill Maher that nuclear weapons are not what we imagine The research has previously examined the potential cognitive benefits of the Mediterranean diet, which is broadly described as a diet high in legumes, vegetables fruits, fish, and unsaturated fats like olive oil and with a low intake of dairy, saturated fats, red meats and…