Most of us have heard that chocolate affects our emotions and mood by raising serotonin levels, which explains why we crave chocolate when we are feeling a bit down. (thehealthytart.com)
Made from the seeds of an African plant, 5 - HTP can help raise serotonin levels in the brain, which may lead to improvements in sleep, mood, anxiety, appetite or pain sensation. (herbalfenphenlawyers.com)
It's quite possible that this might be one reason why antidepressants, which raise serotonin levels in your brain, are often ineffective in treating depression, whereas proper dietary changes often help... (articles.mercola.com)