One of the most common questions asked about HGH is whether it can make users grow taller. Between the ages of about 12 and 18, your body is still growing. During this time, the administration of HGH can help you add inches to your height. As such, HGH is an essential part of therapy for children who have growth disorders such as dwarfism. However, between 18 and 21 years old, growth plates on your bones fuse together and essentially “lock” your height. Administering HGH may cause individual bones in your body to thicken, but it will not lengthen them.
Masterson has also been involved with the New York Rescue Workers Detoxification Project , a controversial organization  with ties to the Church of Scientology.  He also played in a charity softball game in New York's Central Park to help raise money for children in need of neurosurgery,  designed guitars for a MusiCares fundraiser,  and has supported such as the Hollywood Police Activities League (a national youth development program for at-risk youth).  He has also played on the World Poker Tour Celebrity Invitational for the charity Chrysalis, with all proceeds going to said charity.  He has also played the World Series of Poker's Ante up for Africa event.