Whereas this polar bear could easily make a meal out of you, one bite of his liver could possibly be sufficient to send you to the hospital. Liver has lengthy been a staple in many diets. Deep-fried rooster livers are a favorite in components of the American South. In Japan, you can order a heaping helping of sashimi made with uncooked fish liver. As scrumptious (or disgusting) as some of these dishes might sound to you, not each fowl, fish or mammal necessarily gives the most effective components for a culinary masterpiece. Travel 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, however they've lengthy identified to keep away from eating the livers of various arctic creatures. In truth, when you ever have the prospect to try polar bear liver, suppose twice -- it will be the final meal you ever eat. Western explorers, however, learned the laborious way. Perhaps the most horrific symptom they encountered was peeling skin. Even the thick pores and skin on the bottoms of a affected person's toes may peel away, leaving the underlying flesh bloody and exposed. The worst circumstances ended in liver damage, hemorrhage, coma and death. These explorers suffered from acute hypervitaminosis A, a situation ensuing from the overconsumption of vitamin A throughout a brief time period. Whereas milder instances merely concerned flaking around the mouth, some accounts reported instances of full-body pores and skin loss. The polar bear's liver, very like these of arctic seals and huskies, incorporates extremely high ranges of retinol (the form of vitamin A found in members of the animal kingdom). On the next web page, we'll discover why polar bears carry around so much vitamin A in their livers and the way essential their retinol tolerance is to their survival. Whereas some vitamins dissolve in water, vitamin A only dissolves in fat. As an alternative, it collects within the body's filtration organ, the liver, where it could big teddy bear online actually reach toxic ranges. Vitamin A is an important building block for many animals. Which means, in contrast to other vitamins, excess vitamin A would not exit the body in urine. People only require it in very small amounts, however it plays a significant role in eyesight, reproduction, fetal development, growth, immune response and the cellular formation of tissue. Vitamin A tolerability in people varies depending on age, gender and bodily situation. With out sufficient vitamin A in your system, you would simply find yourself dealing with symptoms simply as unhealthy as those related to hypervitaminosis A. Deficiencies can result in dry skin, diarrhea, blindness, growth retardation and even death. We typically absorb it by means of the consumption of foods comparable to spinach, broccoli, eggs, milk and various meats. In actual fact, their physiology developed to tolerate a lot vitamin A for just one purpose: to eat seals. Like many animals, polar bears benefit from retaining a specific amount of vitamin A of their system, however there's nothing to indicate they actually require such massive portions. If you 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 to be able to swiftly develop and nourish their young in a harsh, chilly setting. In the wild, polar bears feed nearly exclusively on bearded seals and ringed seals, both of which store high levels of vitamin A of their livers and blubber. Remember, vitamin A plays a key role in growth and natal improvement. So if the blue plate special at your favourite diner is ever sautéed polar bear liver, you may just need to persist with a salad. The seals rely on this vitamin to rapidly advance them by their weak pup stages. Explore the hyperlinks on the subsequent web page to be taught extra about vitamin A and polar bear liver. One polar bear liver sometimes incorporates as much vitamin A as seventy nine to 115 hen eggs. That award-successful meal is available in at almost twice the tolerable upper limits of human vitamin A consumption. What does world warming should do with the decline within the polar bear inhabitants? Brown, Dan. "Vitamin A Toxicity." Cornell College Division of Animal Science. AZA Bear Tag. "Polar Bear (Ursus maritimus)." Association of Zoos and Aquariums Standardizes Animal Care Guidelines. Eliasen, Mogens. "The Dangerous(?) Vitamin A." K9joy Schooling. Higdon, Jane. "Vitamin A." Linus Pauling Institute at Oregon State University. Hicks, R. Marian. "The scientific basis for relating to vitamin A and its analogues as anti-carcinogenic agents." Proceedings of the Nutrition Society. Worldwide federation of Competitive Consuming. Lintzenich, Barbara, et al. Brookfield Zoo Conservation Biology and Research 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, K. and T. Moore. Slaughter, Kip. E-mail interview.
