The objective of this study is to determine the variation between chronological age, classical age and biological age. For this, the researchers analyzed blood markers from nearly 12,000 Chinese adults. Thus, they predicted the biological age of patients with an algorithm driven by artificial intelligence.
The scientists then compared this age to individual parameters such as declared illnesses, lifestyle and psychological state.
As a result, and unsurprisingly, certain pathologies accelerate aging, for example a history of stroke. Of course, smoking also accelerates aging. Smokers are 15 months older than non-smokers.
This is known data, but the researchers present a more surprising result: having a vulnerable mental state accelerates aging. Feeling hopeless, unhappy or lonely adds just over a year and a half to a person’s biological age. More so than smoking…
What is the main limitation of this study and how is the psychological state studied in the global context of aging? Interview with Sandrine Andrieu, professor of public health at the University Hospital of Toulouse. 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, a survey of available studies on the subject. It shows that vaccination is not associated with premature birth. Same observation for caesareans, they are not more numerous in vaccinated women. And vaccination also protects. It is associated with a reduced risk of infant death and intensive care admission.
Results that still invite the vaccination of pregnant women; in France they can also receive a 4th dose since July 20th. Vaccination recommended from the first trimester of pregnancy.
A meteor shower would have hit Earth at the time of the decline of the dinosaurs
This theory comes from the 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 balls mixed with the rock. A total of 215 small pearls, just over a tenth of a millimeter wide, which could only form under extreme conditions, such as the impact of a giant meteorite.
Some of these balls were melted around 68 million years ago, to within 3 million years, which coincides with the giant meteorite that would have caused the disappearance of the dinosaurs. This summer, another study had revealed the presence of an 8 km crater off the coast of Guinea, which also dates from the same period.
The Nobel Prize in Physiology and Medicine was awarded yesterday noon
The winner is Svante Pebää. He is one of the founders of paleogenomics, that is to say the study of ancient DNA. He sequenced the genome of Neanderthals and discovered that we share almost 2% of our genome with him. And in 2008, thanks to a fragment of phalanx found in Siberia, he revealed the existence of another extinct hominin, Denisova’s man.
Pääbo’s father, Suné Bergström, also won the Nobel Prize in 1982 for his research on prostaglandins. And that’s not entirely unusual. This is the 8th time that the prize has been awarded to the child of a previous winner.
And this afternoon, it will be the turn of the Nobel Prize in Physics to be awarded. CQFD Science will devote a few minutes of its program at 4 p.m. to the discoveries of the winner.
When the dinosaurs end, a meteor shower? (Release)
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A study reveals that our mood has an impact on our aging
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