Common salt is a mineral composed primarily of sodium chloride. Salt is essential for animal life, and saltiness is one of the basic human tastes. In general, Americans should limit daily sodium consumption to 2,300 milligrams, but this is an upper safe limit, not a recommended daily allowance.
MSG is used in the food industry as a flavor enhancer with an umami taste that intensifies the meaty, savory flavor of food, as naturally occurring glutamate does in foods such as stews and meat soups.
The generalized name for sweet, short-chains of soluble carbohydrates. The world produced about 168 million tonnes of sugar in 2011. The average person consumes about 24 kilograms (53 lb) of sugar each year (33.1 kg in industrialised countries), equivalent to over 260 food calories per person, per day. New FDA nutrition facts labels recommend no more than 50g of added sugars per day. Potential negative health effects of excess sugar consumption include addiction, Alzheimer's disease, changes in blood glucose levels, cardiovascular disease, hyperactivity, obesity, diabetes, and tooth decay.