Middle-aged adults with a foggy view of the past shouldn't be blaming their forgetfulness on past pot smoking, according to a new study.

FOX's Colleen Cappon reports in today's "Housecall for Health":

Middle-aged adults whose memories have grown hazy can't blame occasional marijuana smoking for being forgetful.

A study published in the "American Journal of Epidemiology" tested the mental function of nearly 9,000 50-year-olds, and found that those who had used illegal drugs in the past decade has the same or better results than those who had not.

Despite the data, experts warn that heavy prolonged use of marijuana may harm mental functions.

Housecall for Health, I'm Colleen Cappon, FOX News Radio.