There has been a lot of interest in recent years in two carotenoids, lutein & zeaxanthin, as evidence is mounting that increased
...Digestive enzymes are secreted into the digestive tract to break down food matter into its component nutrients. These can then be absorbed across the gut wall into the bloodstream. If this enzyme system does not work effectively, undigested food passing into the large intestine will be fermented by the resident bacteria, causing flatulence, bloating & diarrhoea.