Sweat potatoe, Harry Potter

It's not Harry Potter who found the potion for a longer life, it's Marianne Geleijnse. Her article will come out soon in the European Journal of Epidiomology. Although she criticises her own research, I think she might be on to something. So this blog is right in encouraging us to eat avocado's & sweat potatoes, lentils & Barley. What would Ruth in six feet under think about this?