For many people a health diet means a low-fat diet. Many healthy products are marked as low fat or fat free, and we are lead to believe that eating fat makes you fat. This is, however, not entirely true. Fats are an important part of your diet. They are key in neurotransmitter production due to amino acids they contain, and unsaturated fats are important for healthy skin and hair. As long as you get the balance right and are eating enough mono-saturated and poly-saturated fats, such as those found in olive oil and seeds, and you are steering clear of trans fats, you can begin to benefit physically, and the positive changes in your appearance and general health can give you a good mood boost.