Eating fast food will not only make you likely to put on weight but may give you the blues as well, a study has suggested.
Research has revealed eating junk food has a negative effect on mental health, making those who consume it regularly feel depressed.
A study showed people who often ate hamburgers, hotdogs and pizza are 51 per cent more likely to develop depression than those who rarely or never ate them.
Those who regularly indulged were also found to be more likely to be single, less active, smoke and work more than 45 hours a week.
The study, involving nearly 9,000 participants who had never before being diagnosed with depression, has now been published in the Journal of Public Health Nutrition.
Scientists assessed the group over a period of six months, and found 493 of them were diagnosed with depression or began taking anti-depressant medication.