While I too have heard that nutrients absorb better when isolated, it makes me wonder if his body is going to adapt to the shakes and start absorbing the nutrie

While I too have heard that nutrients absorb better when isolated, it makes me wonder if his body is going to adapt to the shakes and start absorbing the nutrients it needs first until saturated. While the reaction you mentioned above may happen, maybe the adaptation will absorb the specific nutrients and neutralize the already saturated nutrients.