A fifth of Scottish people believe jam counts as one of their five-a-day portions of fruit and veg.
Although jam does contain fruit it is often more than 60 per cent sugar meaning a very high calorie content.
Despite this it is perhaps slightly healthier than the notorious Scotttish export, the saturated fat laden deep fried Mars bar.
A report in the Economist last year highlighted the role of diet in Glasgow's abnormally high mortality rate.
Other factors include higher levels of poverty and a generally gloomier outlook.