we don’t eat better than 30 years ago

we don't eat better than 30 years ago

This is the result of a large survey that scrutinized the eating habits of 185 countries between 1990 and 2018. For this, researchers from Boston have created a score by country. A scale from 0 to 100. 0 for a diet low in nutrients…with lots of sugars and processed meats…to 100 for a diet with enough fruits, vegetables, nuts and whole grains.

It turns out that most countries have a score around 40.3, France is in this range. And the authors note a minimal improvement of 1.5 points since 1990 across all countries. How can this small increase be explained? While the consumption of nuts, legumes and vegetables has increased over time, these improvements are diminished, offset by the increasing presence of red meat and processed meats and sugary drinks.

What are the limits of this study and what lessons can be drawn for France? Nicolas Sahuc is a dietitian and specialist in eating disorders at Montpellier University Hospital

Does drinking tea protect against diabetes?

These are results presented at the congress of the European Association for the Study of Diabetes. Researchers have carried out a meta-analysis, an analysis of 19 studies… And it turns out that consuming one to three cups a day for 10 years is associated with a 4% reduction in the risk of diabetes. And this reduction goes up to 17% for heavy tea drinkers.

This echoes another study published this month: drinking two or more cups of tea is associated with a reduction in mortality risk of 9 to 13%.

Attention, for one or the other of these studies, many explanations could partly explain these results, and without involving tea… What are the eating habits of these tea drinkers, do they eat better, are they less overweight, do they belong to a higher socio-economic level, do they have less genetic predispositions? So it is only a correlation and not a causation.

The winners of the breakthrough prizes were announced yesterday.

These are the Oscars of Science, which reward scientific breakthroughs. An American award launched in 2010 by Silicon Valley entrepreneurs. The winners will share a total of more than 15 million dollars, making it the best-endowed scientific prize, ahead of the Nobels.

Among the winners, a Frenchman, Emmanuel Mignot, professor at Stanford, for his work on the causes of narcolepsy, a disease that causes sudden drowsiness.

Another prize in life sciences was awarded to Demis Hassabis and John Jumper, founder and researcher of DeepMind, a Google subsidiary specializing in artificial intelligence. They developed Alpha Fold, an algorithm which made it possible to predict… all the structures of proteins, the effectors of our cells… This tool is a major advance because the structure of proteins makes it possible to define their functions.

And also this year, no woman was rewarded.

Lemurs hug trees to regulate their temperature

What we do know is that the Sifaka or Sifaka, diurnal lemurs, have fewer sweat glands than most primates. And therefore have less ability to regulate their temperature.

To find an explanation for this observation, scientists studied six groups of sifakas during the hot period of the dry season in Madagascar. They recorded their tree-hugging habits as well as air, ground and tree temperatures at several heights for two months.

And it turns out that the hugs only happened when the air temperature exceeded 30°C. And that the base of these trees is about 3°C ​​to 5°C colder than at height and colder than the temperature of the surrounding air… which suggests that these lemurs cuddle the base of the trunks to release heat of their body and thus refresh themselves.

Essential information to contribute to the conservation efforts of these species. Note that all this is not just cute, an increase in the frequency of this behavior also imposes an increase in the risk of predation.

And one last image of the James Webb

The telescope has made new feats. The image of Neptune and its rings is to be found here. Astronomers hadn’t had such clear views of the most distant planet in the Solar System since the brief, one-time pass of a probe, Voyager-2, in 1989.


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