And since older children don't usually develop symptoms of a lactose intolerance until they are four or five years old, changing your baby to a lactose - free formula is often unnecessary. (verywellfamily.com)
The babies who didn't develop these symptoms invariably had high levels of the four microbes in their 3 - month stool samples. (sciencemag.org)
The cure may help office workers who develop symptoms such as headaches and eye irritation. (newscientist.com)