"Unprocessed grains" refers to whole grains that have not been refined or altered. They are in their natural state and have not had the bran or germ removed, so they contain more nutrients such as fiber, vitamins, and minerals. Full definition
Clean meat, veggies, fruits, nuts, seeds, greens, and whole unprocessed grains like oats, quinoa, and rice (if you tolerate them). (mindbodygreen.com)
Instead, these two unprocessed grains provide complex carbohydrates filled with fiber, vitamin B2, zinc, magnesium, and more. (health.com)
My guess is that he would recommend monitored fasting, elimination of refined carbs and strict limiting of whole unprocessed grains during feeding periods with extra exercise to reduce or avoid the insulin. (idmprogram.com)