A new Swedish study reveals that maintaining a healthy BMI throughout childhood is crucial for optimal lung development. Researchers tracking 4,000 children over 24 years found that both underweight and overweight individuals exhibited reduced lung function. While overweight children experienced restricted airflow, underweight children showed inadequate lung growth. A new Swedish study reveals that maintaining a healthy BMI throughout childhood is crucial for optimal lung development. Researchers tracking 4,000 children over 24 years found that both underweight and overweight individuals exhibited reduced lung function. While overweight children experienced restricted airflow, underweight children showed inadequate lung growth. Health and Fitness, Health Tips, Exercises & Workout Tips, Diet & Wellness | Times of India Lifestyle