Yoga & Weight
The goal of Yoga is to connect you with the divine in you.
It does it through body movements, breathing, and meditation.
The good thing is that as a plus you will get physical, mental, and general well being results, such us, weight reduction, not only because of the Yoga asanas, but because you will feel better and will take better decisions on your health and life style.
Because your question is one of the most common ones we have dedicated a section on weight control: