In nature, tin is a decidedly minor rock component, it would not be expected to be found in natural water, except in very minor traces.
A diet composed largely fresh meat, cereals, and vegetables can supply tin at about 1 mg/day, whereas a diet that includes substantial amounts of canned vegetables, fruit juices and fish can provides as much as 38 mg/day.
Tin has always been part of the human diet, but it greatly increase d when canned food was introduced in the 1800s.
Higher concentrations of tin are found in tissue from people in wealthier countries, probably as a result of greater use of canned foods.
Ingested tin is poorly absorbed (less than 3%) and mainly excreted in the feces. Tin accumulates in the skeleton, liver, spleen and kung and is excreted in urine.
Because it is poorly absorbed and poorly retained in the tissues it may necessary terrace elements. Tin also has a low toxicity.
Tin in human diet
