The Landman actor revealed why wheat, dairy and most meats are off the menu. His rare blood type and allergies are to blame.
Billy Bob Thornton just dropped the real reason his diet is so restricted. On the Howie Mandel Does Stuff podcast, the 70-year-old explained he is allergic to wheat and dairy while also dealing with type AB-negative blood, the rarest type in the world at less than 1 percent of the population. That combo means fewer digestive enzymes and major stomach drama after meals.