Claire McCarthy, MD

Claire McCarthy, MD, is a primary care pediatrician at Boston Children's Hospital and an Assistant Professor of Pediatrics at Harvard Medical School. In addition to being a faculty editor for Harvard Health Publishing, Dr. McCarthy writes about health and parenting for Boston Children's Hospital, Boston.com, and the Huffington Post.


Posts by Claire McCarthy, MD

Holiday toys for kids: “Back to basics” is best

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

As you are shopping for the children on your gift list this year, it may be tempting to choose the latest shiny gadget, but consider choosing toys for them that encourage learning and development, creativity, imagination, language skills, and physical activity.

Giving babies and toddlers antibiotics can increase the risk of obesity

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

Antibiotics are crucial tools in fighting illnesses, but over-reliance on them can have serious consequences. A new study found that babies who were given antibiotics in their first two years were significantly more likely to become obese.

Getting your baby to sleep through the night: The good (and maybe not-so-good) news

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

Parents of newborns may be disappointed to learn the results of a Canadian study: even at one year, nearly half of the babies in the study did not sleep a full eight hours. However, the babies did not experience any adverse developmental effects, and parents should remember that children will eventually sleep through the night.

AFM: The scary polio-like illness

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

Acute flaccid myelitis (AFM) is an illness with symptoms that are somewhat similar to polio — weakness and loss of muscle tone in the arms and legs — but with an unknown cause. AFM is more common in children and emerges suddenly, but there is no known treatment or cure.

How to have a safe Halloween

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

As Halloween approaches, safety concerns should be on all parents’ minds. These tips and suggestions will help your kids and your trick-or-treating visitors have a safe and fun Halloween.

The real link between breastfeeding and preventing obesity

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

Research into the connection between breastfeeding and obesity in children found that babies who got milk directly from the mother’s breast for the first three months of life had the lowest risk of becoming obese, because they are less likely to overfeed.

Concussion care for children and adolescents: New recommendations

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

The ongoing concern about the effects of concussions has prompted the Centers for Disease Control and Prevention to evaluate research and issue concussion recommendations intended to guide parents, coaches, and doctors in concussion care.

Could household disinfectants be making our children fat?

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

Not all bacteria are harmful; our digestive tracts contain bacteria that help keep us healthy. Researchers from Canada found that in homes where disinfectant household products were used, children were more likely to be overweight or obese at age 3.

Parents: Don’t use a baby walker

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

While it may be tempting to put a baby in a moving walker, the devices have led to thousands of injuries over the past three decades, plus they do not help babies learn to walk but in fact hinder that process.

Naps: Make the most of them and know when to stop them

Claire McCarthy, MD

Faculty Editor, Harvard Health Publishing

As babies become toddlers, when they need to nap and for how long evolves, so parents and caregivers need to know how to handle the changes, as well as how to know when naps are no longer needed.