The health impact of Delhi-NCR's toxic air could go far beyond respiratory illnesses. Doctors point to data linking pollution with a wide range of conditions, including asthma, lung cancer, COPD, pneumonia, heart attacks, heart failure, hypertension, strokes and type 2 diabetes. The list also includes concerns around children's neurological development, autism, ADHD, reduced lung growth, impaired memory and visual processing, as well as low birth weight and thyroid disorders. Twenty conditions have been identified, but doctors warn that this may only be the tip of the iceberg.