Scant study into chronic disease

Women with the common conditions of endometriosis or growths in their uterus have a slightly higher risk of dying before the age of 70, says a US-based study.

One in 10 women worldwide suffer from endometriosis, a chronic disease in which tissue similar to the lining of the uterus grows outside the womb.

Up to a quarter are thought to have non-cancerous growths in their uterus called uterine fibroids.

Despite many having these conditions, both are considered under-researched, with some blaming a historically male-focused medical establishment for overlooking health problems that affect women.