How many genders are there ? There are many gender identity terms out there , so here's what you need to know, with advice from a gender specialist psychologist. Do Scientists Believe In Multiple Genders ? Supporters of the "only two genders " concept often cite biology to assert that there are only men and women, but the scientific consensus suggests otherwise. Scientists now argue that sex operates on a spectrum, and there may be as many gender variants as there are individuals. Learn the meanings of various terms related to gender, such as agender, bigender, demigirl, and more. This web page explains the difference between gender and sex, and how gender is a spectrum with many possibilities. All 21 genders officially recognised by the NHS and what they really mean The NHS has officially recognised 21 genders and sexual identities for Pride Month 2024