Lynda
If you go to the Google search engine (input www.google.com into the address bar) and then search under things like "increasing serotonin" or "serotonin and diet" etc. you will find things like this excerpt: "The most effective way of raising serotonin levels is with vigorous exercise. Studies have shown that serotonin levels are increased with increased activity and the production of serotonin is increased for some days after the activity. This is the safest way of increasing serotonin levels and many other benefits result from regular exercise. Serotonin levels can also be controlled through the diet. A diet deficient in omega-3 fatty acids may lower brain levels of serotonin and cause depression. Complex carbohydrates raise the level of tryptophan in the brain resulting in a calming effect. Vitamin C is also required for the conversion of tryptophan into serotonin." I can give you the specific website that this came from, but there are plenty of ways to find out what you are asking about... Hope this helps! LYNDA