minor human biochemistry changes....

[Straha]

If Man's body could make its own Vitamin C like most mammals can, he
would be immune to scurvy on long sea voyages. Effects?

If Man's kidneys were as affective as those of camels at
concentrating the urine, he would be able to drink seawater as a
source of water. Effects?

[fortyseven]

Wow, one year ago to date! I was gonna post the first one but did a search first. What are the other vitamins that humans can only get from their diet?