Experts say you should enjoy your food but be careful about what you eat and remember to keep active.
The government is trying to work out how to let you know what's in your food.
They may decide that food like burgers and chips should be served up with a warning that you should balance your meal with exercise - just like cigarettes have health warnings on them.
Popstars and sport stars may be banned from advertising fast food and high fat, high sugar snacks and drinks.
And some vending machines in schools have already been emptied and replaced with healthier options.
Cooking lessons could also be included in your day, to help you learn how to prepare food that's good for you.