David Beckham at 40
David Beckham celebrates his 40th birthday in May.
By that age, around half the men in Britain are losing their hair, some more than others.
However, has the ageing process lessened his sex appeal?
We thought it would be fun to find out and commissioned a poll to find out the age at which men become 'invisible' to the opposite sex.
Middle-aged women have complained about the same phenomenon - so is it the same for me?
Our poll found that men become invisible to women at the age of 39 - the same age as Beckham.
Beckham, looking as good as ever, may just be the exception who proves the rule!
You can read more about the full findings here:
Our poll certainly provoked a lively debate in the media.
You can read lots of comments about whether 39 is truly when men become invisible in this feed on the popular website Netmums.com
Crown Clinic's surgeon Asim Shahmalak said that 40 was a big turning point for many men.
He said: "it is the most popular age for men to seek a hair transplant.
You only have to look at Robbie Williams to see how true that is.
"He turned 40 in February and admitted having a transplant to fill out his temples where he had started to lose his hair. He clearly didn't want to become 'The Invisible Man'.
"He realised that a hair transplant is the one simple cosmetic procedure that men can have to improve their appearance. They are not interested in liposuction or facelifts - but they do desperately want to keep hold of their hair.”