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A research study carried out on the school children of Delhi shows that one out of every 10 students of Delhi's private schools suffer from obesity, high blood pressure and increased levels of bad cholesterol. Together, these risk factors make them vulnerable to develop a host of non-communicable diseases, primarily cardiovascular diseases (like heart attacks and stoke), cancer, chronic respirator diseases (such as chronic obstructed pulmonary disease and asthma) and diabetes. They are the major cause of adult mortality and illness worldwide. The students of government schools, who come from lower socio-economic strata, are relatively less vulnerable to get these diseases, the study conducted by researchers from AIIMS, Public Health Foundation of India, Indian Institute of Health Management and Research and the London School of Hygiene and Tropical Medicine says. It has been published in Preventive Medicine Reports (PMR). The research involved screening of 786 boys and 543 girls - studying in grades II and XI in 10 randomly selected private schools and nine government schools. The percentage of overweight and obese students among private schools was 13% and 9% respectively. Among the government school students, only 3% students were found to be overweight and none of them were found to be obese. Number of underweight students in government schools was, however, noted to be three times that of the private school students. Hypertension and bad cholesterol, risk factors usually associated with increasing age and unhealthy lifestyle, was also found to be affecting the students. In the study, the prevalence of hypertensive students in private schools was 13% and in government schools it was 4.5%. Monika Arora, the lead author of the study said, "This is the first research to report on the distribution of multiple risk factors for NCDs in school students in India, comparing low socio-economic status (government schools) to high socio-economic status (private schools). "Private school students has 29 times the prevalence of obese students compared to government schools," she said. Arora blamed sedentary lifestyle and unhealthy eating for the increased risk and stressed on the need for comprehensive, school-based interventions to promote healthy lifestyle among them.