Nutritional science has provided functional foods with the required amounts of natural antioxidants, vitamins, fats, proteins, polyphenols, carbohydrates, and other components required to maintain the cell function and prevent programmed cell death. Food scientists have developed essential strategies such as high fibre diets to treat chronic neurodegenerative disease that are now associated with obesity and diabetes and linked to the developing and developed world. The use of dietary supplements and functional foods in human nutrition may therefore be promising for preventing or counteracting metabolic disorders and related diseases. Short chain fatty acids (SCFA) now have reported to be a more biologically active component in the treatment of diabetes cognition, brain disorders and Alzheimer’s disease (AD). SCFAs are a subset of fatty acids that are produced by the gut microbiota during the fermentation of dietary fibres. It is understood that fibre is converted into SCFAs by bacteria, these are 2-carbon to 5-carbon weak acids, mainly acetate (C2), propionate (C3), butyrate (C4) and valerate (C5). SCFA such as butyric acid may be a critical strategy as an HDAC inhibitor to determine the effectiveness of various functional foods in the treatment of diabetes and Alzheimer’s disease.
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