Another 1 in 5 said they were questioning whether they were non-binary.
The comedian will raise money for charity by running daily marathons in January.
"I changed the public aspect of my identity because having it wilfully ignored hurt too much."
The pandrogyne pioneer of alternative music has died after a long illness.
The pansexual star has seemingly come out on social media.
The gender-neutral personal pronoun has increased in prominence.