Myth 3: Guinness has some mysterious health-granting properties.

The truth: SORT OF TRUE. At least the first part is; the breast-feeding thing is disputed. According to the BBC, “A pint of the black stuff a day may work as well as a low dose aspirin to prevent heart clots that raise the risk of heart attacks.” But while “[p]regnant women and nursing mothers were at one stage advised to drink Guinness, the present advice is against this. If you do some irresponsible Google research, you will find lots of varying opinions, of course — something about how much iron is in Guinness. I say: Mariah Carey did it. You’re probably cool.