A new study found that multiple doses of antibiotics in infants are associated with a variety of illnesses in later childhood.

Babies and toddlers who received one dose of antibiotics were more likely to have asthma, eczema, hay fever, food allergies, celiac disease, problems with weight and obesity and attention deficit hyperactivity disorder later in childhood, according to the study published Monday in Mayo Clinic Proceedings.

Multiple antibiotic treatments below the age of two was associated with a child having multiple conditions, the study found, with the illnesses differing due to the child’s gender, age, type of medication, dose and number of doses.

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