Melatonin is a natural hormone that’s mainly produced by the pineal gland in your brain. It plays a role in managing your sleep-wake cycle and circadian rhythm.| Cleveland Clinic
Gluten intolerance, or sensitivity, is when you feel sick after eating gluten. Gas, bloating and fatigue are common symptoms of gluten sensitivity.| Cleveland Clinic
Cortisol is a steroid hormone that your adrenal glands release. It affects several bodily functions and mainly helps regulate your body's response to stress.| Cleveland Clinic