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Effect of Thumb Sucking and Nail Biting on Health Article Summary

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“Thumb-sucking, nail-biting, and Atopic Sensitization, Asthma and Hay Fever”


The article “Thumb-sucking, nail-biting, and Atopic Sensitization, Asthma and Hay Fever”, did theEffect of Thumb Sucking and Nail Biting on Health Article Summary research on the children in childhood and as then as an adult. The article explores about the diseases that what stage of age, children are more prone to the diseases, why they get the diseases. However, in the article, it is mentioned that children who do nail-biting and thumb-sucking in the childhood, have the lower risk to develop the atopy, hay fever, asthma or atopic sensitization (Lynch, Sears, & Hancox, 2016)


  • It is reported in the history that the children at the age of 5, 7, 9 and 11 years if do the nail-biting and thumb-sucking, only have the chances of atopic sensitization, at the age of 12 and 32 years, then there many be potential confounding factors, include the following.
    • Parental atopy, breastfeeding, pet ownership, socioeconomic status, parental smoking household crowding.
  • The children who have the larger families or elder sibling are less likely to have the hay fever.
  • The children who grow up in the larger families and with the number of the sibling are more likely to have the diseases.

Current Status

  • If the hygiene hypothesis were correct then it would influence on the risks of allergy.
  • There is no current evidence that the children who do nail-biting are associated with the risk of allergy.
  • In my childhood, I did the nail-biting and now in the adult age, I am safe from the atopic sensitization.

Future Directions

For the future, we must not suggest that children should do the nail-biting or thumb-sucking as the results are beneficial because children get safe from the atopic sensitization; the reduction of atopic sensitization will have the long-term effects. The children need to be protected from the adults so that there could be no common allergies.


By exploring the effects of the nail-biting and thumb-sucking, it is known that the children who have the habit nail-biting and thumb-sucking have the lower prevalence of at atopic sensitization among adults.

  • Lynch, S. J., Sears, M. R., & Hancox, R. J. (2016). Thumb-Sucking, Nail-Biting, and Atopic Sensitization, Asthma, and Hay Fever. Pediatrics , 138 (2), 1-18.

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