Nog: Looking Out for You

Think supersizing your fast food meal is a bargain? Researchers from University of Wisconsin Madison have looked into some unforeseen costs of getting the extra large fries and coke.

While the average "upsized" fast-food meal costs a mere 67 cents more than a regular meal, those bonus calories could translate into substantial daily costs due to weight gain.

Based on their estimates, each fast-food "value" meal would cost an adult 5 cents more in fuel expenses -- as heavier passengers reduce a car's fuel efficiency - and about 35 cents in overall food costs, since heavier people need more calories.

Add to that the healthcare cost per super-size meal -- which ranges from 82 cents to $6.64 -- and these fast-food deals are no deal at all.

For every 100 calories a person eats beyond his daily needs, the price in terms of food, medical care and gasoline rises anywhere from 48 cents to nearly $2. The heavier a person is, the greater the cost.