Niacin, a pharmacological Gpr109a agonist, suppressed colitis and colon cancer in a Gpr109a-dependent manner in mice. Thus, Gpr10a has an essential role in mediating the beneficial effects of gut microbiota and dietary fiber in colon.
Most "niacin" products are niacinamide. If you want the form discussed in this research, look for nicotinic acid specifically.
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