Omega-3 fatty acids affect the transmissions of some neurotransmitters brain chemicals. While a balance of omega-3 fatty acids and add diet teen url fatty acids is best for overall health, the typical American diet contains too few omega-3s. Excessive thirst Increased need to urinate More research is needed in this area. Again, aim for a balanced diet that includes a variety of fresh, whole foods. A diet that eliminates too many foods can be unhealthy because it may lack necessary vitamins and nutrients.