Do you really believe that? Maybe the antibiotics in the chicken --- although truly healthy chicken is spectacularly expensive, and even products labeled "organic" can still be flooded with antibiotics "to prevent disease outbreaks" which are inevitable in factory farms.

Other than antibiotics, I generally call BS on the health benefits of "organic" and "grass fed" protein. You should eat organic --- or, VERY preferably, local --- but you should do it (a) because it tastes better, (b) to support local family farming, and (c) because it's more humane. Not because of some supposed health benefit.