Commentary: There is a lot of "pharma interest" in Vit D, and we have had a large number of preparations (drops, tablets, powders etc.) in multiple strengths being marketed for preventing and treating Vit D Deficiency. While conventional wisdom was that due to sunlight tropical countries are unlikely to suffer from serious Vit D Deficiencies, the reality has turned out to be different. Due to many factors, including pollution, dark skin, our aversion to sunlight exposure, lifestyle changes etc. there is an apparent epidemic of Vit D deficiency. Even though experts are still debating about the normal values of Vit D for Indian population, the large number of people with Osteoporosis (weak bones) and fractures occurring in even youngsters points to a definite problem related to poor calcium absorption that occurs in the absence / deficiency of Vit D.
The above mentioned tips are important for preventing & treating Vit D deficiency, it is probably more practicable to take supplements of Vit D (not the usual Calcium pill) after consulting your doctor. A weekly course of Vit D packets (costing 20-25 rupees each) for 8-12 weeks is helpful for most people, and then they may need to take this monthly for an even longer period of time. However, this & any other treatment should ONLY be started after talking to your doctor.