Sugar has been linked to obesity.  Why?  How does it manage to be so widely availabe and cause so much damage to health? As human beings we are wired up to crave sugar on the assumption that we will never be able to eat it that often.  In modern times, of course, that has all changed and what was once a useful aid to our survival now threatens to handicap our efforts to lead healthy lives.

But all is not lost!  5 top tips for beating it plus a joke you may not have heard before...