Together with her husband, Greengross ran a large general practice in
Tottenham, London. She particularly promoted
family planning, and they were the country's first GP practice to have a dedicated
marriage guidance. She had her own television show on BBC1 in 1973, ''
Let's Talk it Over''. From 1972 to 1976, Greengross was an
agony aunt for
The Sun, but "felt the letters passed to her were more about titillation than education". Greengross wrote
Jewish and Homosexual, published in 1980, by the
Reform Synagogues of Great Britain, which "led the way towards equality within the British Reform and Liberal movements". Greengross published several sex education books, particularly focused on more marginalised groups, such as
Sex and the Handicapped Child in 1980. Greengross was a founding member and chair of the organisation
Sexual Problems of Disabled People (SPOD), and a founder of the
Residential Care Consortium. ==Selected publications==