>>12303205Fiber modulates nutrient absorption, slows the digestive system down, without it your body will likely begin to pass food particles not even fully converted into waste. Also water soluble fiber acts as a lubricant, so your guts don't have to overwork to pass the waste through your colon, without it you get constipated. Trust me, I know all too well about getting constipated from lack of fiber. Humans have bee eating it for all our existence, it's absurd to believe it's harmful, that book looks like a meme written by a nobody, or worse, a shill.
