But this entire cleansing work, through continued contracting of the tissues (becoming lean) must be done by and with the original old blood composition of the patient; and consequently a long fast, especially a too-long fast, may become in fact a crime if the sick organism is too greatly clogged up by waste. Fasters who died from too long a fast did not die from lack of food, but actually suffocated in and with their own waste. . . More clearly expressed: the immediate cause of death is not a poverty of the blood in vital substances, but from too much obstruction. "O" (obstruction) becomes as great as or even greater than "P" (air pressure) and the body mechanism is at its 'death point.'"

~ Mucusless Diet Healing System & Rational Fasting