Scientists who gave fruit flies a triple drug combination treatment and found that it extended their lives by almost 50 percent say their work offers clues on how to fight aging in people.

The researchers said their aim is not to find the secret of eternal life, but to figure out the mechanism of the aging process to find ways to help people stay healthy for longer.

"We are not trying to cheat death, but help people be healthy and disease-free in their final years," said Linda Partridge, a professor at University College London's Institute of Healthy Ageing and the Max Planck Institute for Biology of Ageing who co-led the work.