We do have to pick our battles at home. As a pediatrician I’ve never gotten too excited about advising parents to spend a lot of energy trying to rid your child of the thumb-sucking or nail biting habit. In general parents aren’t successful — peers are. Often it’s when friends or peers bring the habits up that children are motivated to stop. We can help support them by reminding them when hands are in their mouth or even having them place socks on their hands while watching television as that’s a common time for the behavior. Although many parents worry about their children sucking their thumbs and fingers, it’s a common habit, with some studies finding almost 25% of children do. Much time is spent thinking about ways to help our children quit, worrying whether germs on their hands will translate to illness and hoping it doesn’t affect their teeth. A new study today this week in Pediatrics highlights perhaps a positive effect of thumb sucking. It’s worth a mention.
Allergy Protection From Thumb-Sucking And Nail-Biting?
The study evaluated children between age 5 and 11 and their later diagnoses of hay fever, allergy skin prick testing and asthma. The premise of the study builds off the somewhat controversial concept of the hygiene hypothesis. The basic premise of the hypothesis is that germ exposure early in life can contribute to how our immune system responds as we grow and develop. We may build up tolerances and immunity that conform us into less allergic people if we have different bacteria and germs around. Basically, living in a sterile environment may not be “safer” as some believe lots of dirt, bacteria, and germs early and maybe not so many sensitivities later…
In the past theories for the hygiene hypothesis have supported a decrease risk of asthma (dirt and germs coming in from and on pets may decrease allergies or asthma later) and a small 2013 study a couple years back found those children who had parents who “cleaned” the pacifier with their own mouth may be less likely to develop allergies (theory was the bacteria transfer from mom/dad’s spit to baby changed their pattern of exposure to bacteria and possibly a tendency away from allergies and asthma later). So some researchers looked a the effects of children who have their hands in their mouths more to see if any protection comes of it — they evaluated data spanning from childhood to adulthood. Read full post »