A study shows that our mood has an impact on how we age

The goal of this study the variation between chronological age, classical age and biological age is to be determined. To do this, the researchers analyzed blood markers from almost 12,000 Chinese adults. They predicted the biological age of patients using an algorithm controlled by artificial intelligence.

The scientists then compared this age with individual parameters such as declared diseases, lifestyle and mental state.

As a result, and not surprisingly, certain pathologies accelerate aging, for example, a history of stroke. Smoking naturally accelerates the aging process. Smokers are 15 months older than non-smokers.

This is well-known data, but the researchers present a more surprising finding: A vulnerable state of mind accelerates aging. Feeling hopeless, unhappy, or lonely adds a little over a year and a half to a person’s biological age. More than smoking…

What is the main limitation of this study and how is the psychological state examined in the global context of aging? Interview with Sandrine Andrieu, Professor of Public Health at the Toulouse University Hospital. She leads an Inserm research team in the epidemiology of aging.

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Vaccination against COVID-19 is safe during pregnancy

This is the result of a meta-analysis, an overview of available studies on the subject. It shows that vaccinations are not associated with preterm birth. Same observation for cesarean sections, they are no more numerous in vaccinated women. And vaccinations also protect. It is associated with a reduced risk of infant death and ICU admission.

results that still invite vaccination of pregnant women; in France you can also get a 4th dose since July 20th. Vaccination recommended from the first trimester of pregnancy.

At the time of the demise of the dinosaurs, a meteor shower would have hit the earth

This theory stems from analysis of lunar soil samples by the Chinese Mission Chang’e 5. Why the moon? Because it is a mirror of our planet. These analyzes showed the presence of small glass spheres intermingled with the rock. A total of 215 small pearls, just over a tenth of a millimeter in size, which could only form under extreme conditions, such as the impact of a huge meteorite.

Some of these spheres were melted about 68 million years ago, to within 3 million years, coinciding with the giant meteorite that would have caused the dinosaurs to disappear. This summer, another study had revealed the presence of an 8km-long crater off the coast of Guinea, also from the same period.




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The Nobel Prize in Physiology and Medicine was awarded yesterday at noon

The winner is Svante Pebää. He is one of the founders of paleogenomics, i.e. the study of ancient DNA. He sequenced the Neanderthal genome and discovered that we share almost 2% of our genome with him. And in 2008, thanks to a fragment of a phalanx found in Siberia, he revealed the existence of another extinct hominin, Denisova’s people.

Pääbo’s father, Suné Bergström, also received the Nobel Prize in 1982 for his research on prostaglandins. And that’s not entirely unusual. This is the 8th time the award has been given to a child of a previous winner.

And this afternoon it’s the turn of the Nobel Prize in Physics. CQFD Science devotes a few minutes of his program to the discoveries of the winner at 4 p.m.

A big thank you to Sandrine Andrieu for her valuable explanations.

For further

Depression or loneliness can age us faster than smoking (science post)

When the dinosaurs end, a meteor shower? (Publication)

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