Over the counter genetic tests in UK ‘fail to identify 89%’ of those at serious risk

Study by University College London also says 5% of users are wrongly told they will develop major illness

Over the counter genetic tests in the UK that assess the risk of cancer or heart problems fail to identify 89% of those in danger of getting killer diseases, a new study has found.

Polygenic risk scores are so unreliable that they also wrongly tell one in 20 people who receive them they will develop a major illness, even though they do not go on to do so.