Every three months, the women were given another hormone to protect the lining of the uterus, and cause period-like bleeding.

BBC: Hormone spray 'could stop cancer'

The current combined pill, which contains progesterone and another female sex hormone oestrogen, has been linked to an increased risk of breast cancer.

BBC: NEWS | Health | Birth pill 'may cut cancer risk'

However, new research suggests another answer may be a hormone called glucagon-like peptide 1 (GLP-1).

BBC: Diabetes hormone treatment hope

The statistical slam dunks marred by allegations of steroid and human growth hormone use are another story.

FORBES: Magazine Article

But another explanation could be changes in lifestyle factors which increase the risk of hormone-dependent tumours, such as women having babies at an older age, obesity after menopause and use of hormone replacement therapy.

BBC: Breast cancer biology 'changing'

Another patient, a 62-year-old executive at a major commercial bank, says growth hormone has boosted his memory and sex drive.

FORBES: Sweet Syringe of Youth

Elixir focuses on another molecular mechanism linked to aging, one that casts doubt on the fad of taking human growth hormone to keep you young.

FORBES: Researchers are unlocking the mysteries of aging.