In youngsters in particular, such a temporary lactase deficiency can even outcome from a viral or bacterial infection.

FILE - On this July 2, 2009 file picture, the ADM emblem is seen on a tanker truck which carries largely corn syrup on the Archer Daniels Midland Company plant in Decatur, Ill.

Yo-yo dieting is changing our eatingreduce weight, then acquire, drop some pounds, then achieve, drop pounds, then acquire and on and on