Healing fields is different bro. Obviously they need need physical intake to support the healing process. But the diet fields is exclusive !
Like here , “The 3 Ginsengs” is a DIET FIELD. When sapien can create various flavours of perfumes, incense out of thin air without needing to buy physical product. As @El_Capitan_Nemo created “The 3 Ginsengs” diet field, Perfumes , incense etc. why not “Spirulina & Maca” as DIET FIELD (Re-create complete effect) along the same lines. It would be exciting and useful if he can make this one too ! :)