Weekend Links

Health
Against the Grain - What's So Bad About Gluten? (Interesting article -- worth reading the whole thing.)
10 Fad Diets, Debunked (Also worth a read. Basically...everything has pros and cons.)

Cool
Plants Can Tell When They're Being Eaten
Trick to Drawing a Perfect Free-Hand Circle

Sports
Why Peyton Manning's Record Will Be Hard to Beat (via FlowingData)