Because I had no choice. When you discuss “nutrition” you need to take into account how live cells actually work. Not a cartoon of a cell but the real thing. This has to do with the principle of the limiting factor.  Once you learn it, you can’t unlearn it. From my book: Limiting factors in skin care  The graph above describes most biological processes that depend on the supply of nutrients or substrates. Let’s use the graph to describe, for example, the division of skin cells, a process we want to promote in our aging skin. Do the cells need glucose? OK, let’s give them glucose and division rate should … Continue reading Why is the Revitalizing Nutrient Cream so complicated?