
A pioneering stem cell treatment has allowed women to grow their own breast implants.
Stem cells can turn into a variety of different body tissues. Japanese scientists harvested the stem cells from the women's own body fat, and used them to form breast tissue.
The procedure was first used in 2004, and has been performed on dozens of women with no apparent problems. The treatment may be available from plastic surgeons within five years.
"Natural implants" made from fat already exist, but they shrink over time due to a lack of blood supply. Using stem cells could overcome this problem, as some may differentiate into blood vessels, allowing a blood supply to reach the new breast tissue.
To date, the technique only boosts breast size half as much as existing synthetic implants, but it is reported to produce a more natural look.