Chris adopted a super-low-fat diet, allocating only 2 percent of his total daily intake of fat, the minimum required to maintain his health. Xand opted for a high-protein diet that ditched all forms of carbohydrates, from table sugar to flour to fruit. The brothers, who both work as physicians, shared similar daily routines and stuck to the exact same fitness regimen. Furthermore, because they claim to share identical DNA, they surmised that any changes they experienced would be attributable to diet, not genetics. A film crew followed their nutritional journey, and it's airing as a documentary on BBC2 on Wednesday.
More on Yahoo: Redditor Surprises Parents With 130-Pound Weight Loss
Xand was motivated becauseRead More »from Twin Brothers Put Diet Crazes to Ultimate Test