Whereas this polar bear may easily make a meal out of you, one chunk of his liver could be enough to send you to the hospital. Liver has lengthy been a staple in lots of diets. Deep-fried chicken livers are a favorite in parts of the American South. In Japan, you can order a heaping helping of sashimi made with uncooked fish liver. As delicious (or disgusting) as some of these dishes may sound to you, not every bird, fish or mammal essentially offers one of the best ingredients for a culinary masterpiece. Travel to Germany and you may feast on traditional liverwurst. The native peoples of the Arctic have by no means shied away from cooking up some polar bear stew, however they've lengthy known to avoid eating the livers of varied arctic creatures. In fact, should you ever have the chance to strive polar bear liver, assume twice -- it could be the final meal you ever eat. Western explorers, nevertheless, discovered the onerous way. Maybe essentially the most horrific symptom they encountered was peeling pores and skin. Even the thick pores and skin on the bottoms of a affected person's ft may peel away, leaving the underlying flesh bloody and uncovered. The worst cases ended in liver injury, hemorrhage, coma and demise. These explorers suffered from acute hypervitaminosis A, a condition resulting from the overconsumption of vitamin A during a brief time period. Whereas milder cases merely involved flaking across the mouth, some accounts reported instances of full-body skin loss. The polar bear's liver, much like those of arctic seals and huskies, contains extremely high ranges of retinol (the form of vitamin A found 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 how crucial their retinol tolerance is to their survival. While some vitamins dissolve in water, vitamin A solely dissolves in fats. As an alternative, it collects within the physique's filtration organ, the liver, the place it could attain toxic ranges. Vitamin A is a vital building block for many animals. This means that, unlike other vitamins, excess vitamin A does not exit the body in urine. People solely require it in very small quantities, but it surely plays a vital role in eyesight, reproduction, fetal growth, development, immune response and the cellular formation of tissue. Vitamin A tolerability small teddy bear online in people varies depending on age, gender and physical situation. Without enough vitamin A in your system, you could easily find yourself facing symptoms just as bad as these associated with hypervitaminosis A. Deficiencies can result in dry pores and skin, diarrhea, blindness, development retardation and even loss of life. We typically absorb it by way of the consumption of foods corresponding to spinach, broccoli, eggs, milk and numerous meats. Actually, their physiology advanced to tolerate a lot vitamin A for just one motive: to eat seals. Like many animals, polar bears profit from holding a certain quantity of vitamin A of their system, but there's nothing to indicate they really require such massive quantities. When you ate a bearded seal's liver, you'd suffer from hypervitaminosis A, however the polar bear can tolerate and enjoy the feast. The seals store excessive levels of vitamin A in an effort to swiftly develop and nourish their young in a harsh, chilly surroundings. Within the wild, polar bears feed nearly solely on bearded seals and ringed seals, each of which store high ranges of vitamin A in their livers and blubber. Remember, vitamin A performs a key role in development and natal growth. So if the blue plate particular at your favourite diner is ever sautéed polar bear liver, you might simply need to keep on with a salad. The seals rely on this vitamin to quickly advance them via their vulnerable pup levels. Discover the links on the next web page to be taught extra about vitamin A and polar bear liver. One polar bear liver sometimes contains as a lot vitamin A as 79 to a hundred and fifteen chicken eggs. That award-winning meal is available in at nearly twice the tolerable higher limits of human vitamin A consumption. What does world 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)." Affiliation of Zoos and Aquariums Standardizes Animal Care Guidelines. 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 brokers." Proceedings of the Nutrition Society. International federation of Competitive Eating. 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 University of Cambridge Dunn Nutritional Laboratory and Medical Analysis Council. Rodahl, Ok. and T. Moore. Slaughter, Kip. E-mail interview.
