Whereas this polar bear could easily make a meal out of you, one chunk of his liver could be sufficient to send you to the hospital. Liver has lengthy been a staple in lots of diets. Deep-fried chicken livers are a favourite in elements of the American South. In Japan, you may order a heaping helping of zenwriting.net/relaityvjy/while-thispolar-bear-might-easily-make-a-meal-out-of-you-one-chunk-of-his sashimi made with uncooked fish liver. As scrumptious (or disgusting) as some of these dishes may sound to you, not every chicken, fish or mammal essentially provides one of the best substances for a culinary masterpiece. Journey to Germany and you may feast on conventional liverwurst. The native peoples of the Arctic have never shied away from cooking up some polar bear stew, but they've long identified to keep away from eating the livers of assorted arctic creatures. In actual fact, for those who ever have the possibility to strive polar bear liver, think twice -- it often is the last meal you ever eat. Western explorers, however, discovered the onerous approach. Maybe probably the most horrific symptom they encountered was peeling skin. Even the thick skin on the bottoms of a affected person's ft might peel away, leaving the underlying flesh bloody and exposed. The worst cases ended in liver harm, hemorrhage, coma and dying. These explorers suffered from acute hypervitaminosis A, a condition resulting from the overconsumption of vitamin A during a brief period of time. While milder cases merely concerned flaking across the mouth, some accounts reported instances of full-physique pores and skin loss. The polar bear's liver, very similar to these of arctic seals and huskies, contains extraordinarily excessive ranges of retinol (the form of vitamin A present in members of the animal kingdom). On the next page, we'll uncover why polar bears carry around a lot vitamin A of their livers and the way essential their retinol tolerance is to their survival. Whereas some vitamins dissolve in water, vitamin A solely dissolves in fat. Instead, it collects within the physique's filtration organ, the liver, where it can attain toxic ranges. Vitamin A is a vital constructing block for a lot of animals. Which means that, unlike other vitamins, excess vitamin A would not exit the physique in urine. Humans solely require it in very small amounts, however it performs a significant role in eyesight, reproduction, fetal development, development, immune response and the cellular formation of tissue. Vitamin A tolerability in people varies relying on age, gender and bodily condition. Without sufficient vitamin A in your system, you might simply end up dealing with signs just as bad as these associated with hypervitaminosis A. Deficiencies can result in dry skin, diarrhea, blindness, development retardation and even death. We sometimes absorb it by means of the consumption of foods akin to spinach, broccoli, eggs, milk and various meats. Actually, their physiology advanced to tolerate so much vitamin A for only one cause: to eat seals. Like many animals, polar bears benefit from retaining a specific amount of vitamin A in their system, however there's nothing to indicate they really require such large portions. If you happen to ate a bearded seal's liver, you'd suffer from hypervitaminosis A, but the polar bear can tolerate and enjoy the feast. The seals retailer high ranges of vitamin A so as to swiftly develop and nourish their young in a harsh, chilly environment. In the wild, polar bears feed virtually solely on bearded seals and ringed seals, each of which retailer excessive ranges of vitamin A in their livers and blubber. Remember, vitamin A performs a key function in development and natal improvement. So if the blue plate special at your favorite diner is ever sautéed polar bear liver, you would possibly simply wish to keep on with a salad. The seals depend on this vitamin to shortly advance them via their vulnerable pup stages. Discover the hyperlinks on the subsequent page to be taught extra about vitamin A and polar bear liver. One polar bear liver typically incorporates as a lot vitamin A as 79 to one hundred fifteen chicken eggs. That award-winning meal comes in at practically twice the tolerable upper limits of human vitamin A consumption. What does global warming must do with the decline in the polar bear population? Brown, Dan. "Vitamin A Toxicity." Cornell University Division of Animal Science. AZA Bear Tag. "Polar Bear (Ursus maritimus)." Association of Zoos and Aquariums Standardizes Animal Care Tips. Eliasen, Mogens. "The Dangerous(?) Vitamin A." K9joy Education. Higdon, Jane. "Vitamin A." Linus Pauling Institute at Oregon State College. Hicks, R. Marian. "The scientific foundation for relating to vitamin A and its analogues as anti-carcinogenic agents." Proceedings of the Nutrition Society. International federation of Competitive Consuming. Lintzenich, Barbara, et al. Brookfield Zoo Conservation Biology and Analysis Middle. Canadian Journal of Zoology. Penniston, Kristina L. and Sherry A. Tanumihardjo. Mos, Lizzy and Peter S. Ross. The American Journal of Clinical Nutrition. The University of Cambridge Dunn Nutritional Laboratory and Medical Research Council. Rodahl, Ok. and T. Moore. Slaughter, Kip. E-mail interview.
