Mayo Clinic researchers found that the prevalence of mild cognitive impairment decreased with an increase in the consumption of monounsaturated and polyunsaturated fatty acids.

Eating poor food can put you in a low mood, new research suggests. Scientists have found a link between consuming harmful trans fats and an increased risk of depression; however, olive oil and healthier polyunsaturated fats appear to have the opposite effect, helping to keep people cheerful.