It's okay to go a little nuts once and a while, especially when it means preventing heart disease.

Women's Health reports that participants in a Penn State study who at 1.5 ounces of pistachios daily for four weeks, then ate three ounces daily for four more weeks, saw a nine percent drop in LDL cholesterol after the four weeks and a twelve percent drop after boosting their intake during the weeks that followed.

According to the Women's Health article, pistachios -- which are rich in good, healthy fats -- help lower levels of interleukin-1 -- an indicator of inflammation, which is a risk factor for heart disease -- by 15 percent. Related studies have shown that walnuts, almonds and many other nuts can also reduce heart disease risk.