After analysing Twitter posts sent to male and female lawmakers, women were found to be three times more likely than men to receive sexist comments, said the study, described by its author as one of the first to quantify the different treatment.
"Sexism and abuse are everyday occurrences for many female politicians who are active online," said Eva Barboni, founder of Atalanta, a British group that aims to boost the number of women in senior government jobs.
"This takes a heavy toll on both the politicians themselves and on our broader democratic debate, particularly when it escalates from harassment to threats," she said in a statement.
Social media attacks are so common for female politicians that they deter women from running for office around the world, advocates and female lawmakers say.
By analysing tweets sent between September and November 2017 to three prominent pairs of female and male politicians in Britain, South Africa and Chile, Atalanta found nearly three-quarters of Twitter posts sent to women were to do with their appearance or marital status.
Most of these comments were negative and were unrelated to their competence as politicians, said the report, which also included interviews with women politicians.
"It's something that I would advise people to think about carefully before they become an MP, so they know what they're getting into," British parliamentarian Rachel Reeves was quoted as saying in the report.
Many politicians in Britain have become more vocal about the abuse they face after opposition Labour politician Jo Cox, a 41-year-old mother of two children, was shot and stabbed to death a week before Britain's Brexit referendum in 2016.
Platforms such as Twitter, YouTube and Facebook have been criticised for failing to remove abusive material posted online even after they were notified.
Britain's ethics watchdog in December recommended introducing laws to shift the liability for illegal content on to social media firms, and called for them to do more to take down intimidatory content.
Nearly 45 percent of all women parliamentarians had received threats of death, rape, beatings or abduction during their term, according to a 2016 study by the Inter-Parliamentary Union (IPU), the international organisation of parliaments.
(This story has not been edited by NDTV staff and is auto-generated from a syndicated feed.)
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