Growing up, many of us clashed with our parents over what we were supposed to eat. Although it seemed perfectly reasonable to request McDonald's all the time, they insisted that we actually needed to eat those vegetables we did our best to ignore.
As we got older, most of us understood why eating fast food every day isn't a particularly good idea, but it seems that our parents were more right than even they would have realized.
Because while they may have told us we'd get big and strong with healthier foods and were really just trying to make sure we didn't end up with diabetes or heart disease, it turns out those weren't the only health issues to worry about.