If indulging in a Big Mac didn’t make you feel guilty before, it probably will now.

A new study has found that every fast food meal a person eats increases their BMI by 0.03 points.

Now that may not seem like a lot, but if you’re a regular at the local chipper, you can just imagine how terribly your BMI increases after only a week.

Generally, a person with a BMI of 18.5 to 24.9 is considered to be a healthy weight, those between 25 to 29.9 are considered to be overweight and a BMI of more than 30 is classed as obese.

The researchers involved in the study think that the government can help reverse the obesity epidemic by regulating how fast food is being advertised as well as giving people economic incentives to encourage companies to sell healthier foods.

But for the meantime, it looks like you’ll just have to think twice before ordering another take away because those 0.03 points will eventually add up…