, this mineral stimulates taste, smell, appetite and mood. Lean beef also contains heart-healthy monounsaturated fat, while iron and vitamin B12 promote healthy red blood cells.Greek yoghurtAs well as containing double the amount of protein as regular yoghurt

are found in vegetable oils and are plentiful in most processed foods. Omega-3s aren't so easy to come by. They're found in small amounts in nuts (which also contain omega-6 acids) and some plants, but the best source of complete omega-3 fatty acids (without

. Not only do avocados contain heart-healthy monounsaturated fats but researchers at Ohio State University discovered that their phytochemicals can help prevent mouth cancer.2. GarlicThe pungent bulb is an enemy of cancer. But don't throw it straight