American legislators in nearly a dozen states are mulling moves to slash the time vending machines can be operational in schools, hoping that restrictions on snack temptation will lead to lower levels of childhood obesity.

The US Department of Agriculture was foiled in its 1983 attempt to ban soda and candy sales in schools, when the National Soft Drink Association challenged the proposed prohibition in the Federal Appeals Court.

A report on healthworldonline revealed that this time legislators are hoping that the vending machines will be banned just during class time. In California, for example, a proposed law may soon mean that primary schools will only be able to provide milk, water or juice to children.

According to figures released earlier this year by the Centers for Disease Control and Prevention, modern teenagers are nearly three times as likely to be overweight as their counterparts two decades ago.