An international group of scientists conducted a very detailed study of more than 100,000 zoo animals for cancer research, and the results were amazing.
Many of us believe that cancer occurs in humans. However, animals as well as pets can develop cancer.
However, it is not known to what extent wild animals will develop cancer, as wild animals are less likely to survive due to starvation and predation.news release I’ll announce it.. In addition, cancer affects older animals, and in the wild it is difficult to estimate the age of dying or dead animals.
For this reason, researchers have focused on animals in the zoo. Zoo animals closely monitor their lives from infancy to adulthood and old age to determine how often they face cancer.
Scientists have studied cancer using data on 191 species and 110,148 adult mammals that died in the zoo.They found that cancer is a widespread disease that threatens mammals and “can appear anywhere in mammals.” Phylogeny.. “
An important finding was that the risk of cancer was not evenly distributed, for example, Carnivora had a high incidence of cancer. “More than 25% of clouded leopards, bat-eared foxes and red wolves die of cancer.” Ungulate It seems to be very resistant to cancer.
The data came from Species360According to Orsolya Vincze, a researcher at the Center for Ecology Research in Hungary and one of the authors of the paper, it is an international non-profit organization that collects and integrates this type of data from zoos around the world.
Using the data collected by the organization, the research team was able to “gather information about why the animal died.” Said Ars Technica..
The team limited the search to data points acquired after 2010. Before that, records management wasn’t very good. And the reason the team studied animals at the zoo is that it’s difficult to collect such detailed information from wild species.
Animals in their natural habitat with cancer are also more likely to be predated or starved, and they tend to die sooner, Vinze said.
“You have to go to the zoo where every individual is being tracked, and you know when they die, and you know what they died,” she says. I did.
Researchers have found that eating the prey of animals, especially mammals, increases the risk of cancer across mammals. They may be related to the reasons “low diversity of microbial flora, limited exercise under human care, carcinogenic viral infections of other physiological aspects of carnivorous mammals”. It suggests that there is sex.
The study also investigated whether large mammals are more likely to develop cancer due to increased cell numbers and cell division. Tumors are usually the result of mutations during cell division.
According to news release notes, for humans, the larger the body size (height), the higher the risk of cancer. Therefore, it makes sense that animals that are large and have a long lifespan are more likely to develop cancer.
However, these correlations do not affect animals like humans do.This effect is known as Peto’s paradox: “There is no correlation between body size and cancer risk.” Researchers write “The first logical task set out by Sir Richard Peto points out that mice have about one-thousandth the number of cells in humans and are more than 30 times shorter in lifespan, but there is no significant difference in the risk of carcinogenesis. Did.”
The study points out that “the risk of cancer is largely independent of the weight and life expectancy of the entire mammal,” providing evidence of the Peto paradox. This means that over the course of evolution, larger and longer-lived animals have evolved to have more efficient tumor suppression mechanisms.
“Our entire study emphasizes that cancer can be a serious and serious threat to animal welfare, which is considerable, especially in the context of recent environmental changes caused by humans. It requires scientific attention, “said Fernando Corcello, co-author of the University of Southern Denmark.
The authors write that “cancer is detected in at least one individual of almost all species and more than 82 individual pathological records are available.” Still, there were two species in which no cancer was detected, blackbuck (Antilope cervicapra) and patagonia mara (Dolichotis patagonum), but postmortem pathological records were available in 196 and 213, respectively.
News releases can make great strides in cancer medicine by studying these animals, Biomimetic Unlike most other cancer treatments, a natural cancer treatment that is non-toxic to the patient.
Source: TRT World and distributors
https://www.trtworld.com/life/meat-eating-mammals-are-at-a-higher-risk-of-cancer-study-53251?utm_source=other&utm_medium=rss Meat-eating mammals are at high risk of cancer — research