Many of these researchers already have documented the link between chronic exposure to polluted air and high blood pressure, diabetes and obesity.

Clinical interest has hitherto largely focused on pathology in the retina as a manifestation of known systemic disease, such as diabetes or hypertension.

A new us study published in the 'Journal of Obesity' has claimed it is' a myth 'that overweight and obese people are more susceptible to Type 2 diabetes, heart disease and high blood pressure.