Acute stress is unique to man. The chart below reveals the amount of adrenal stress hormones (cortisol) released by humans compared to other animals. There are exceptions: guinea pigs, fruit bats, primate monkeys. These four species share a genetic flaw. Unlike other mammals, these do not synthesize ascorbate from their liver (ascorbate being the medical term for vitamin C). A liver enzyme (gulonolactone oxidase) required to produce vitamin C is missing in humans due to a defect in the GULO gene. Vitamin C: The Real St… Steve Hickey, Andrew W… Best Price: $8.91 Buy New $12.47 (as of 10:10 EST – … Continue reading →