Prime Minister Narendra Modi on Friday said obesity is emerging as a major challenge for the country, and everyone must contribute to this fight against the challenge.

Addressing the nation from the ramparts of the Red Fort on the 79th Independence Day, he warned that according to experts, one in every three people will suffer from obesity in the coming years and reiterated his previous suggestion to buy 10 per cent less oil for cooking.

"When I speak of fitness, when I speak of sports, I also wish to place before you a matter of concern. Obesity is becoming a very grave crisis for our nation, and every family in our country should take it seriously. We must protect ourselves from obesity.