Answer: First of all, congratulations on your weight loss! Many factors influence how the skin responds when there is significant weight loss, including:
- Age: the older one gets the less resilient the skin is and the less likely it is to tighten up naturally.
- Genetics: some people have more resilient skin, allowing it to better adapt to the new body size. The protein elastin is responsible for the ability of the skin to stretch and return to normal, and some people simply produce this better and for a longer time period of their life.
- Hydration: poor hydration can lead to skin that is less "taut" and firm, leading to a saggy, wrinkled appearance.
Finally, be sure to give your skin time to correct itself. If it is still early in your weight loss program, be patient; things may improve. Weight training to add muscle can help fill in some areas and tighten the skin around it. There is a certain limit to what skin can adapt to, and your prior weight may have exceeded the skin's ability to contract.
It is not uncommon in those who have lost a lot of weight to have many pounds of loose skin left over. If this is the case and you are bothered by it, there are medical interventions that can be used to remove the excess tissue.