Dr Hilary issued a warning to anyone who is aged over 65 and dating.
The medical professional appeared on ITV's Lorraine as he explained that there has been a huge surge in elderly people contracting STIs - mainly gonorrhoea.
He put the sudden increase down to a higher rate of divorce and separation. Dr Hilary added that the older generation are not as "sexually savvy" as younger people and may not be fully aware of the dangers of unsafe sex.