BMI stands for “body mass index” is a measure of body fat based on weight and height. A normal BMI is between 18 and 25; a BMI of 30 or more indicates obesity. A study appearing in Pediatric Pulmonology (2006; 41(12): 1118-24) looked at diet, weight and asthma in 24,260 Korean children between the ages of 6 and 12. There was a positive association between high BMI and asthma in boys, but not in girls. Also, a high intake of seafood, fresh fruit, and fresh vegetables was also associated with fewer asthma symptoms.