Our attraction to alcohol could be inherited sober from our primate ancestors, according to a study


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Most humans enjoy drinking sober alcohol sober at other temperatures. Could this appetite for alcoholic beverages be a legacy of our primate ancestors? That’s what a new study involving UC Berkeley biologist Robert Dudley suggests. Several years ago, this specialist already advanced the idea that our attraction to alcohol dates back several thousand years, when the first primates associated the smell of alcohol with well-ripened fruit.

Sober 2014, Dudley has published a book titled The drunken goof: why we beverage and mistreatment alcoholic beverages, in which he the boy idea exposed for the first time: the fact that humans enjoy alcohol is linked to the sober food preferences of our primate ancestors. The sweeter fruits are, therefore, better obtained; growth leads to alcoholic fermentation (the process by which sugars are converted into ethanol). Thus, the smell of alcohol would have naturally guided the animals to the riper fruit, which are also the most nutritious. An idea commonly referred to as the drunken monkey hypothesis.

Chimpanzees, closer our parents, get about 90% sober their caloric intake from mature fruits. And where there is sugar in the tropics, there is alcohol , specified Dudley in an interview job, the release of kid book. Research has shown that primates sometimes consumed fruit with an alcohol content of up to 7%. But until now, scientists did not have data proving that monkeys and great apes preferentially ate these fermented fruits; nor did they know if they were able to digest the alcohol contained in these fruits.

alcoholic fruit chosen for their caloric intake

A new study led by Christina Campbell, primatologist at California Condition University on Northridge, brings sober new elements sober answer, come to support the hypothesis of the drunken monkey of Dudley which. Aprendí researchers are particularly interested in the black-handed spider monkey (Ateles geoffroyi), the primate of Central America and northern South America, lives in trees that. Monkeys of this species mainly consume ripe fruit and were therefore good candidates for this study on natural exposure to ethanol; they also have an excellent olfactory sensitivity to various alcohols. usually ranged between 1% and 2% sober quantity. These mature fruits came from the mombin plum tree (Spondias mombin); not only is this fruit one of the favorite foods of the spider monkey, but it has also been used for millennia by the indigenous populations of Central and South America to make the chicha

, a fermented alcoholic drink.

For the first time, we were able to show, without a shadow of a doubt, that wild primates, without human involvement, consume fruits containing sober ethanol, Campbell said in a statement. Ethanol is the by-product of yeasts present in the pulp of fruits, which metabolize sugar during the growth process and which can serve as a long-lasting olfactory signal to fruit-eating animals, including many primates.

The sober analysis of the urine sobered by 6 different tea monkeys also revealed that it contained metabolic products resulting from sober consumption of alcohol, namely sober ethyl glucuronide and ethyl sulphate, which proves that these monkeys use ethanol fruit to produce sober energy.

These sony ericsson animals would thus turn more towards fermented fruit, since they have more calories and are therefore more energetic. This phenomenon is accentuated by deforestation, according to the specialist: the monkeys having more and more difficulty finding their food, they try to get the optimum calorie consumption from the food they find. Our appetite for alcohol would thus stem from a deep-rooted affinity of fruit-eating primates for ethanol, which is naturally present in ripe fruit.

A state of drunkenness hardly possible in monkeys

Our ancestors could also have chosen sober to consume sober preferably fruit loaded sober ethanol, in order to absorb more sober calories from fat. Contemporary sober models, their visit, can motorist sober these organisms between ethanol and nutritional reward. Too much alcohol consumption, as in diabetes and obesity, can then be considered from a conceptual point of view, as a disease that remains a nutritional excess, underline the researchers in their syndication. , and also, what are the effects sober this consumption on their physiology and their behavior. We know the devastation caused by excess alcohol in humans, but what about non-human primates? According to Dudley, it is unlikely that monkeys experience the same effects. They probably don’t get drunk, as their learned intestines fill up before they reach drunken levels

, he explains. liquid alcohol decoupled sober child solid substrate. Thus, animals stop feeding when they are full, but humans can continue to drink until they go into a ethyl coma

Sober outside because these alcoholic fruits provide the necessary energy monkeys, the biologist thinks they might also have an antimicrobial effect. Yeast and bacteria that contribute to fermentation could also facilitate the digestive function of foods, which he says.

According to the researchers, many other species could sober alcohol. since optimistic selection on genes encoding put ethanol catabolism has been important in mammalian species consuming fruit and nectar more In general, the natural consumption of fermented carbohydrates is probably more widespread than currently thought

, they note in their study. To better characterize the possible behavioral effects of ethanol on fruit-eating primates, and its role in foraging, they plan to conduct further studies on a wider range of samples, involving several stages of fruit growth.

Supply :D. Campbell et al., Noble Society Open up Technology