Minerals
Vegetables
(27 varieties)
Fruit
(17 varieties)
Meat
(10 cuts)
Milk
Sodium
Less 49%
Less 29%
Less 30%
Less 14%
Potassium
Less 16%
Less 19%
Less 16%
Less 3%
Phosphorous
Plus 9%
Plus 2%
Less 28%
Less 2%
Magnesium
Less 24%
Less 16%
Less 10%
Less 21%
Calcium
Less 46%
Less 16%
Less 41%
Less 2%
Iron
Less 27%
Less 24%
Less 54%
Less 62%
Copper
Less 76%
Less 20%
Less 24%
Less 100%
Decline in the mineral content of food since 1940
Source: Dr. D.E. Thomas