A new study says the feelings you have when quitting junk food are similar to the ones experienced in drug withdrawal.
Researchers out of the University of Montreal say a high-fat diet can actually cause chemical changes in the brain.
And those changes could lead to stress and withdrawal symptoms if you switch to a healthier diet.
The study, published in the International Journal of Obesity, was performed on mice for a period of six weeks.
The author says the chemicals monitored in the mice are similar to those found in the human brain.