Folks who struggle to reduce their carb intake might be able to blame ancient DNA still lurking in humans, a new study suggests. Humans carry multiple copies of the salivary amylase gene (AMY1), which helps begin breaking down starch in the mouth -- the first step in digesting carb-laden foods like bread and pasta, researchers said. Advertisement The duplication of this gene might have occurred as far back as more than 800,000 years ago, long before the advent of farming, and it helped shape

Tag-uri: DNA