While this polar panda teddy bear online bear may easily make a meal out of you, one chunk of his liver might be sufficient to send you to the hospital. Liver has lengthy been a staple in many diets. Deep-fried hen livers are a favourite in parts of the American South. In Japan, you can order a heaping serving to of sashimi made with raw fish liver. As delicious (or disgusting) as some of these dishes may sound to you, not each fowl, fish or mammal necessarily gives the best ingredients for a culinary masterpiece. Travel to Germany and you may feast on conventional liverwurst. The native peoples of the Arctic have by no means shied away from cooking up some polar bear stew, however they've long recognized to avoid consuming the livers of various arctic creatures. In reality, when you ever have the prospect to attempt polar bear liver, think twice -- it would be the final meal you ever eat. Western explorers, nevertheless, discovered the hard way. Maybe essentially the most horrific symptom they encountered was peeling skin. Even the thick pores and skin on the bottoms of a affected person's feet could peel away, leaving the underlying flesh bloody and uncovered. The worst cases ended in liver injury, hemorrhage, coma and loss of life. These explorers suffered from acute hypervitaminosis A, a condition resulting from the overconsumption of vitamin A throughout a short time period. Whereas milder cases merely concerned flaking around the mouth, some accounts reported cases of full-body skin loss. The polar bear's liver, much like those of arctic seals and huskies, contains extraordinarily high ranges of retinol (the form of vitamin A present in members of the animal kingdom). On the subsequent page, we'll uncover why polar bears carry round 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 fats. As an alternative, it collects in the physique's filtration organ, the liver, the place it might reach toxic ranges. Vitamin A is a crucial constructing block for many animals. Which means, in contrast to different vitamins, excess vitamin A does not exit the body in urine. People solely require it in very small amounts, however it plays an important position in eyesight, reproduction, fetal development, growth, immune response and the cellular formation of tissue. Vitamin A tolerability in humans varies depending on age, gender and bodily condition. Without sufficient vitamin A in your system, you can easily end up dealing with signs simply as dangerous as these related to hypervitaminosis A. Deficiencies can result in dry skin, diarrhea, blindness, progress retardation and even death. We typically absorb it through the consumption of foods corresponding to spinach, broccoli, eggs, milk and varied meats. In fact, their physiology advanced to tolerate a lot vitamin A for only one motive: to eat seals. Like many animals, polar bears benefit from holding a specific amount of vitamin A of their system, but there's nothing to indicate they really require such large quantities. If you happen to ate a bearded seal's liver, you'd undergo from hypervitaminosis A, but the polar bear can tolerate and enjoy the feast. The seals retailer excessive levels of vitamin A with a view to swiftly develop and nourish their young in a harsh, chilly surroundings. Within the wild, polar bears feed virtually exclusively on bearded seals and ringed seals, each of which retailer excessive ranges of vitamin A of their livers and blubber. Remember, vitamin A plays a key position in progress and natal growth. So if the blue plate particular at your favourite diner is ever sautéed polar bear liver, you would possibly just wish to persist with a salad. The seals depend on this vitamin to quickly advance them through their vulnerable pup levels. Discover the links on the subsequent page to be taught extra about vitamin A and polar bear liver. One polar bear liver sometimes accommodates as a lot vitamin A as 79 to a hundred and fifteen rooster eggs. That award-profitable meal comes in at practically twice the tolerable upper limits of human vitamin A consumption. What does global warming need to do with the decline within the polar bear inhabitants? Brown, Dan. "Vitamin A Toxicity." Cornell University Department of Animal Science. AZA Bear Tag. "Polar Bear (Ursus maritimus)." Association of Zoos and Aquariums Standardizes Animal Care Pointers. Eliasen, Mogens. "The Harmful(?) Vitamin A." K9joy Training. Higdon, Jane. "Vitamin A." Linus Pauling Institute at Oregon State College. Hicks, R. Marian. "The scientific foundation for regarding vitamin A and its analogues as anti-carcinogenic agents." Proceedings of the Nutrition Society. International federation of Aggressive Consuming. Lintzenich, Barbara, et al. Brookfield Zoo Conservation Biology and Research Center. Canadian Journal of Zoology. Penniston, Kristina L. and Sherry A. Tanumihardjo. Mos, Lizzy and Peter S. Ross. The American Journal of Clinical Nutrition. The College of Cambridge Dunn Nutritional Laboratory and Medical Analysis Council. Rodahl, Okay. and T. Moore. Slaughter, Kip. E-mail interview.
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