New Delhi: It`s not just the elderly who are at risk of developing osteoporosis - a disease of the bones that increases chances of fracture. Less exercise and high junk food intake are making even the young vulnerable to it, experts say. With changes in lifestyle and dietary habits, youngsters are increasingly becoming a high risk group, they say.While women, especially those who are past their menopause, are at a higher risk of getting osteoporosis, experts say that a change in lifestyle is making others vulnerable to the disease too. Ravi Mohan Bagga, senior orthopedic consultant, said: "Osteoporosis is not an illness of just old ladies, but also affects young individuals in both genders. These days it is a trend seen mainly in the younger population used to a sedentary lifestyle and eating junk food.""Men in their 50s do not experience the rapid loss of bone mass that women do in the years following menopause. By the age of 65 or 70, however, men and women lose bone mass at the same rate and the absorption of calcium, an essential nutrient for bone health throughout life, decreases in both sexes," he added.