Your planetary positions in charts are such that if you are overweight, then it will remain so and will be difficult to bring down unless extreme effort is put.
You should avoid food which produces more air in the body. If you do some search you will find food items which help generates more vata.
After year 2030, you can expect more control on your body weight and you will reduce and control obesity more easily. You can expect a phenomenal transformation on your looks in the future. Start working form today.
Jupiter aspects Moon and being lagna lord produces air and hence obesity. Venus Rahu combination in 11 th house can increase beauty. Saturn dasha is more helpful to reduce obesity than Jupiter dasha.