I've read that too and the only explanation offered was that there are no studies to establish a safety level of flax in infants, children, and pregnant women. Personally, I feel that the levels a person can stand to eat are not only safe, but beneficial. I started eating flax muffins everyday at the start of my 3rd trimester. My skin was so dry and I've read that the baby's brain is requiring lots of fatty acids at that point. So I ate up the flax. After ds was born and I was breastfeeding, I found that I craved flax. I couldn't go more than 4 or 5 days before I wanted more. Ds quit pooping daily around 6 weeks (he was pooping about twice a week...and would get uncomfortable). I noticed that when I would eat two of my muffins (about 1/4 cup of flax!), he would poop easily and thoroughly the next day. Sorry for all the grody talk, but that was my experience with flax. It seemed to do good things for us. Ds is 15 months and really likes it now too!