It's not that it's bad, just that it lacks the necessary vitamins and calcium that come from real milk. My youngest daughter is lactose intolerant, something we discovered when she was two months old. Instead of milk, she was fed with a mixture of liquidised chicken, mixed with appropriate vitamins and minerals that she was missing from milk. Once on solids, she obtained those from other sources, and has remained a soya drinker to this day - she's fifteen now, and she is perfectly healthy. I would not give a baby soya milk from chjoice, only from necessity