Many people passively accept factors like diminished brain power, reduced sex drive, and the loss of youthful exuberance, even though they are only entering their forties and fifties. Dr Khalsa argues that these factors are not a natural part of growing older, He claims that our brains can be rejuvenated, and we can get back our memories, our energy, our good mood, and our youthful sex drive. When we are under stress and we "age", he claims, we naturally produce an adrenaline hormone, cortisol, which is toxic to the brain when present in excessive levels. This dimishes the ability of the brain to concentrate, remember facts and learn new ones, and savages the body's hormones governing the regulation of mood and sex drive. This work explains how each of us can reverse the effects of ageing activity. Dr Khalsa provides a step-by-step programme for using complementary medicine from Eastern and Western traditions, and describes what each person can do to return to mental and physical vibrancy through the use of medicine, exercise, food supplements and diet.