Dr Hilary spoke to ITV Daybreak about broadcaster Andrew Marr, who is recovering in hospital after suffering a stroke.
He said that ruptured arteries, which can often cause a stroke can happen at any time, to anyone from any age.
More top news
A shot of a chameleon using its tongue to grab dinner has snatched a top photography award.
One story dominates Thursday's front pages with some newspapers printing emotive pleas to voters to keep the United Kingdom as one.
After a mild start temperatures should pick up, with the south of England seeing highs of 26C.