People who frequently eat fast food and refined carbs tend to have worse mental health. But a new study published in the Journal of Personalized Medicine shows that for women over 30, a healthy diet may be especially important for staving off anxiety, depression, and mental distress. Researchers looked at the diets of over 600 adult men and women. They found that eating fast food and skipping breakfast were linked to worse mood scores, but the effects were much greater for women than men. There was good news, though. They also found that both men and women who exercised, even infrequently, tended to have better mental health than more sedentary people, even when they ate unhealthy foods.