* Can prevent ulcers, colitis, irritable bowel disease, and colon cancer.
==Melatonin Food Sources==
Below are lists containing natural plant sources of melatonin. Melatonin content is in nanogram (ng) per gram of plant sample.<br><br>
Table 1: Melatonin sources ( Rieter and Tan, 2002).
<table style="width: 437px; height: 354px;" summary="list of natural food and herbal sources of melatonin" border="1" cellpadding="2" cellspacing="0">
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<td><strong>Melatonin source </strong></td>