Polar bears are huge carnivores weighing 350-700kg. They can grow up to 10 feet in length. And most of us would dread coming face to face with the huge mammal. But let’s say you were starving on an ice cap in the Arctic and you needed to eat. You spot a polar bear some distance away and because you need to eat to survive, you decide to hunt.
So, you somehow manage to fight and kill it (with your bare hands or some sort of weapon, a gun maybe) and start to feast on it’s meat. Let’s assume you’ve always been a fan of eating chicken liver, lamb liver, cod liver e.t.c. Given your love for eating livers you decide to have a bite of the polar bear’s liver that you just killed.
As soon as you have a bite of the meaty liver of the polar bear you’d be poisoning yourself. This is because because a Polar bear’s liver has a high concentration of Vitamin A. The Vitamin A concentration in the bear’s liver is so high that it becomes lethal to human beings.
Vitamin A is essential to the human body. The average recommended daily allowance (RDA) of Vitamin A for humans is 0.9mg. However if consumed in excess amounts it can cause Hypervitaminosis A, a potentially life threatening condition caused by overdosing on Vitamin A. It can cause headaches, vomiting, hair loss, skin peeling, bone damage birth defects, liver problems and in extreme cases even death.
On average an adult healthy polar bear has enough Vitamin A in its liver to kill 52 humans.
The amount of Vitamin A in a polar bear’s liver can fulfill the Vitamin A requirements of an adult human for 143 years.
Polar Bear Liver = Poison for us Humans
Keep this in mind.