-- Is the baby sitting up? Can she hold her head up?
-- Does your baby open his mouth when food comes his way?
-- Is she big enough? (Babies typically double their birth weight by 4 months)
-- Can he take food off the spoon and actually swallow it?
Parents need clear and accurate guidance on when to introduce solid food to their babies, and pediatricians and health care professionals need to support them, says Scanlon, by explaining to the parents that crying doesn't always mean the baby is hungry - it could also be wet, sick or lonely.