Birth control advice promoting natural contraception on TikTok is putting women at risk of unwanted pregnancies, a study has found.

Researchers in Australia found more than half of content creators on the social media platform reviewed (53 per cent) rejected hormonal methods of contraception, while just over a third (34 per cent) expressed distrust in health professionals.

The team analysed 100 TikTok videos on contraceptive health that had collectively gained nearly five billion views and 14.6 million likes.

Fertility awareness and cycle tracking (38 per cent) and the Pill (35 per cent) were the most frequently discussed subjects, according to the findings published in the journal Perspectives on Sexual and Reproductive Health.