I am amazed at the number of self-agrandizing 'health' pundits who gloat over what they believe to be the wonder food of the ages - soy.
Soy is not your friend, except in certain fermented foods such as tempeh and miso.
Soy is highly allergenic and very toxic to health. Most soy products are blended with toxic additives (SILK for instance). Soy has been connected with health problems in boys and men. For women it is risky too. And babies should not be given soy based formula.
Soy does suppress the function of your thyroid. And the carton, oddly enough, has plastic film linings containing fluoride, another thyroid suppressing element.
So Oprah, just because a guest has MD after their name might not mean they know the science.
On Dr. Roizen's diet shake recipe, leave out the soy milk.
And make sure to pass on any aspartame, neotame, acesulfame K and Splenda (this is a chlorinated hydrocarbon first developed as a pesticide). These are harmful synthetic chemicals that promote poor health.
(We have noted in the past that RealAge gives medical information that is not factual on many topics. They also do not respond well to criticism when better science is presented.)