I know nothing about Noonans, but some about Turners. Another issue with Turners is that often there is channel palate, and significant oral motor weaknesses in neonates. They often have weakness of suck and feeding problems. Please check the palate configuration. Channel palate mimics some of the same challenges found in feeding infants with clefts of the palate. Barbara Barbara Wilson-Clay BSEd., IBCLC Private Practice, Austin Texas Visit the "LactNews-On-Line" Web Page http://www.jump.net/~bwc/lactnews.html