The number of patients diagnosed with the disease has almost doubled in 20 years, correlating alongside a spike in womb cancer rates, Cancer Research UK warned.
From 1993 to 1995, around 19 women in every 100,000 developed womb cancer in the UK, rising to 29 women in every 100,000 by 2011-13 (the most recent figures available).
Around 9,000 women are now diagnosed with womb cancer every year in the UK - up from around 4,800 new cases a year 20 years ago.
It kills around 2,000 women every year.
Professor Jonathan Ledermann, director of the Cancer Research UK and UCL Cancer Trials Centre, said: 'It's worrying that womb cancer cases are going up so sharply.
'We don't know all the reasons why. But we do know that about a third of cases are linked to being overweight so it's no surprise to see the increases in womb cancer cases echo rising obesity levels.
'The good news is that thanks to research and improved treatments, survival has improved.
'In the 1970s, almost six in 10 women diagnosed with the disease survived for at least 10 years. Now almost eight in 10 women survive.
'But we need more research to understand the biology of the disease better and to know more about how it is caused so that we can improve the treatment of these women as well as preventing more cases.'
In January, Cancer Research UK warned that almost 700,000 more people could develop cancer in the next 20 years due to being overweight or obese.