Being overweight is also a chance aspect amongst ladies who have by no means taken HRT, say international researchers.
Previous studies have recommended a hyperlink, but there has been conflicting proof.
The most current investigation, published in the journal PLoS Medicine, analysed all around the world info on the topic.
It seemed at forty seven epidemiological reports in fourteen nations, which includes about 25,000 women with ovarian cancer and much more than 80,000 ladies without having ovarian most cancers.
Direct researcher Prof Valerie Beral of the Oxford College Epidemiology Unit told the BBC: "By bringing together the around the world evidence, it turned very clear that top is a danger issue."
She stated there was also a clear romantic relationship in between obesity and ovarian cancer in females who experienced never ever taken HRT.
"Ovarian cancer can plainly be extra to the listing [of cancers connected to being overweight]," she included.
Sarah Williams, health data officer at Cancer Investigation Uk, stated the review produced a clearer image of the factors that could impact a woman's threat of developing ovarian most cancers, and discovered that entire body size was important.
"Women can reduce their danger of this and numerous other illnesses by retaining to a healthy weight," she mentioned.
"For girls trying to shed weight, the ideal technique is to consume healthily, try to eat scaled-down amounts and be far more physically energetic."
Commenting on the examine, Dr Paul Pharoah, reader in most cancers epidemiology at the University of Cambridge, stated the boost in chance was small.
"If we evaluate a lady who is 5ft tall with a female who is 5ft 6in tall, there is a relative big difference in ovarian cancer threat of 23%.
"But the absolute threat difference is modest. The shorter woman will have a lifetime risk of about sixteen-in-a-one thousand which raises to 20-in-a-1000 for the taller female.
"A equivalent difference in absolute danger would be witnessed when evaluating a slender woman with a body mass index of 20 to a somewhat over weight woman with a entire body mass index of 30."
- A slight enhance in the threat of creating ovarian most cancers for every 5cm boost in height (getting into account other aspects such as age, smoking, and alcohol intake)
- A slight enhance in the risk of ovarian most cancers with higher BMI, in women who have never ever taken hormone replacement therapy (HRT)