"My baby frequently sucks on his hands. Does this always mean that he's hungry?"
After the newborn period, hand sucking is not as reliable an indicator of hunger. Starting at around 6-8 weeks, baby will begin to gain more control over his hands and will soon begin to explore his hands and everything else using his mouth. It is also common for babies to suck on their hands when their gums become tender in preparation for tooth eruption. Symptoms of teething can sometimes occur weeks and even months before the first tooth erupts.