London: An injection that gives middle-aged men the hairline of their youth could be available in just five years, scientists predicted.The jab would use fat cells from the tummy to pep up hair growth on the scalp.The required amount of fat would not be enough to make a noticeable difference to waistlines.But researchers say there may be a market for combining the taking of cells with a full liposuction.This could then be marketed as a two-in-one rejuvenation treatment for men and women to slim down and grow hair back.In a series of experiments, researchers from Yale University in the United States looked at what triggers the hair growth.They found fat cells to be key, with immature fat cells producing chemical signals that ‘wake up' dormant follicles, leading to the production of hair.
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