Since 1996, Dr Camargo’s primary area of research has been respiratory/allergy diseases, such as asthma, chronic obstructive pulmonary disease (COPD), and food allergy. He is studying the etiology and management of these diseases in several large cohorts. In 1998, his team described a strong association between obesity and risk of developing asthma. In 2006, they described a strong inverse association between maternal intake of vitamin D during pregnancy and childhood wheezing. In 2007, they reported a north-south gradient in epinephrine autoinjector prescriptions and proposed an etiologic role for vitamin D. Subsequent randomized trials showed beneficial effects of vitamin D supplementation on winter-related atopic dermatitis (2008) and acute respiratory infections (2012) in children. These novel findings suggested new avenues for the prevention and management of several respiratory/allergy disorders.