article_snippet.sent: The new findings come from experts who conducted one of the world's largest studies into the effects of HRT - used to ease the effects of menopause.
article_snippet.sent: And researchers found if women use HRT for more than 10 years, women risks are even higher.
article_snippet.sent: HRT treats the body by introducing female sex hormones.
article_snippet.sent: There are three types, oestrogen-only HRT, cyclical HRT  - where oestrogen is taken continuously but progesterone is given either monthly or every three months - and continuous combined HRT, where both female sex hormones are taken at the same time.
article_snippet.sent: Meanwhile, in the UK  another key study, the Million Women Study, explored the effects of HRT on women aged 50 or over.
article_snippet.sent: WHI researchers had intended to follow the women up until 2005, but in 2002 it became clear women taking HRT were suffering higher rates of heart disease.
article_snippet.sent: Those women who took the combined HRT, which boosts the body's levels of both female sex hormones oestrogen and progesterone discovered it was the women taking either the combination HRT or those taking oestrogen-only treatment that were going on to suffer heart problems.
article_snippet.sent: As a result, all women were asked to stop taking all women treatment - HRT or placebo - immediately.
article_snippet.sent: He told Time: 'It looks like hormones have longer term lingering effects. '
article_snippet.sent: For oestrogen and progesterone together, we see an increase in risk - even years after you stop. '
article_snippet.sent: The Women's Health Initiative in the US and the Million Women Study in the UK are the two largest studies into the effects of HRT.
highlights_snippet.sent: HRT increase risk of disease up to eight years after stopping treatment .
  
highlights_snippet.sent: Applies to those taking combined HRT - oestrogen and progesterone .
  
highlights_snippet.sent: Discovery made by scientists from one of largest ever studies into HRT .
  
highlights_snippet.sent: But women taking oestrogen-only HRT may actually have a reduced risk .