DNA

What causes heart disease — high fat or the over-consumption of sugar? Humans have been eating all sorts of foods for more than 200,000 years, since we evolved from the African savannah. But what should we be eating to stay healthy in the 21st century? Should we eat large amounts of protein, or avoid meat? Should we avoid carbohydrates, including vegetables and fruit? Should we avoid all fats or just some? Should we follow the Aitkin’s diet, the paleo diet, the low GI or high GI diet, or just go vegan? It is very confusing.