The new rules would mean no more advertisements for candy or soft drinks in hallways or on scoreboards.
The new push comes on the fourth anniversary of the first lady's "Let's Move" initiative.
The initiative is for fighting childhood obesity by promoting healthy eating and exercise, while encouraging healthy choices.
Mrs. Obama says the program is showing results.
"Children born today will be accustom to eating healthy during the school day, so for them the norm will be fruits and vegetables and not chips and candy," the first lady says.
The American Beverage Association, which represents brands like Coke, Pepsi and Dr. pepper says it supports the new proposed measures.
In other health news, beta-carotene and vitamin e supplements should not be taken for the sole purpose of preventing cardiovascular disease or cancer.
That's according to the final report from a government task force that reviewed the potential harms and benefits of using vitamins to ward off chronic disease.
While evidence was insufficient for most vitamins, the report found beta-carotene can raise the risk of lung cancer in people at risk for the disease.
It also concluded vitamin e had absolutely no effect on the prevention of heart disease or cancer.
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