SOON after Catharine Alexander first fed her newborn baby formula he began projectile vomiting and “screaming in agony”.

This article originally appeared on Undark. For Taylor Arnold, a registered dietitian nutritionist, feeding her second baby was not easy. At eight weeks old, he screamed when he ate and wouldn’t gain ...

Add Yahoo as a preferred source to see more of our stories on Google. How to soothe a crying baby? Try everything. Tripod/Getty Images When an infant cries, parents frequently wonder whether they ...