It is not that nutritional supplements cure anything; it is that specific nutritional deficiencies result in all manner of diseases that can be reversed if sufficient nutrition is achieved through required nutrient assimilation. Our body has needs that don’t always align with our desires. Desires that should always take the back seat in light of our body’s requirements.
My research leads me to believe that supplementary Niacin(nicotinic acid) may promote growth and tissue repair by depressing the growth of microbes or parasites that are toxic or steal nutrients from the host, leading to increased nutrient utilization and reduced energy investment in maintaining immune responses within the GI tract.