While this polar bear may simply make a meal out of you, one bite of his liver may very well be sufficient to ship you to the hospital. Liver has long been a staple in many diets. Deep-fried hen livers are a favourite in components of the American South. In Japan, you possibly can order a heaping serving to of sashimi made with uncooked fish liver. As delicious (or disgusting) as some of these dishes might sound to you, not each chicken, fish or mammal necessarily affords the perfect ingredients for a culinary masterpiece. Journey to small teddy bear online Germany and you'll feast on conventional liverwurst. The native peoples of the Arctic have never shied away from cooking up some polar bear stew, however they've lengthy recognized to avoid consuming the livers of various arctic creatures. In reality, if you happen to ever have the possibility to strive polar bear liver, suppose twice -- it could be the final meal you ever eat. Western explorers, however, realized the onerous manner. Perhaps essentially the most horrific symptom they encountered was peeling skin. Even the thick pores and skin on the bottoms of a patient's toes may peel away, leaving the underlying flesh bloody and exposed. The worst cases ended in liver damage, hemorrhage, coma and loss of life. These explorers suffered from acute hypervitaminosis A, a situation resulting from the overconsumption of vitamin A during a brief time period. While milder instances merely involved flaking around the mouth, some accounts reported circumstances of full-physique pores and skin loss. The polar bear's liver, much like those of arctic seals and huskies, contains extremely high ranges of retinol (the type of vitamin A present in members of the animal kingdom). On the following web page, we'll uncover why polar bears carry round so much vitamin A of their livers and the way crucial their retinol tolerance is to their survival. While some vitamins dissolve in water, vitamin A only dissolves in fats. As a substitute, it collects within the physique's filtration organ, the liver, the place it will probably attain toxic ranges. Vitamin A is a vital building block for a lot of animals. Because of this, in contrast to different vitamins, excess vitamin A does not exit the physique in urine. Humans only require it in very small amounts, but it surely performs a significant function in eyesight, reproduction, fetal growth, growth, immune response and the cellular formation of tissue. Vitamin A tolerability in people varies relying on age, gender and bodily situation. Without enough vitamin A in your system, you could possibly easily find yourself going through symptoms simply as bad as these associated with hypervitaminosis A. Deficiencies can lead to dry skin, diarrhea, blindness, development retardation and even death. We typically absorb it through the consumption of foods corresponding to spinach, broccoli, eggs, milk and varied meats. The truth is, their physiology evolved to tolerate so much vitamin A for only one reason: to eat seals. Like many animals, polar bears profit from protecting a certain amount of vitamin A in their system, however there's nothing to point they really require such giant quantities. 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 store high levels of vitamin A to be able to swiftly grow and nourish their younger in a harsh, chilly setting. In the wild, polar bears feed virtually exclusively on bearded seals and ringed seals, both of which store high levels of vitamin A in their livers and blubber. Remember, vitamin A performs a key function in development and natal development. So if the blue plate particular at your favorite diner is ever sautéed polar bear liver, you might just need to persist with a salad. The seals rely on this vitamin to rapidly advance them through their weak pup stages. Discover the links on the next page to learn more about vitamin A and polar bear liver. One polar bear liver usually accommodates as a lot vitamin A as 79 to one hundred fifteen chicken eggs. That award-winning meal comes in at nearly twice the tolerable upper limits of human vitamin A consumption. What does international warming need to do with the decline in the polar bear inhabitants? Brown, Dan. "Vitamin A Toxicity." Cornell College Division of Animal Science. AZA Bear Tag. "Polar Bear (Ursus maritimus)." Affiliation 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 relating to vitamin A and its analogues as anti-carcinogenic agents." Proceedings of the Nutrition Society. International federation of Aggressive Eating. Lintzenich, Barbara, et al. Brookfield Zoo Conservation Biology and Analysis Heart. 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 Research Council. Rodahl, K. and T. Moore. Slaughter, Kip. E-mail interview.
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