Scientists find molecule that mimics exercise, slows ageing: Study

EXERCISE appears to spark a whole-body anti-ageing cascade, and scientists have now mapped out how it happens–and how a simple oral compound can mimic it.
By following volunteers through rest, intense workouts, and endurance training, researchers found that the kidneys act as the hidden command centre, flooding the body with a metabolite called betaine that restores balance, rejuvenates immune cells, and cools inflammation.
Even more striking, giving betaine on its own reproduced many benefits of long-term training, from sharper cognition to calmer inflammation.
A new study in the journal Cell from the Chinese Academy of Sciences and Xuanwu Hospital Capital Medical University explains how exercise helps the body stay youthful.
The researchers also highlight betaine — a metabolite produced in the kidney — as an oral compound that can imitate many of the rejuvenating effects normally linked to physical activity.
Betaine is a small molecule found in foods like beets and spinach, but the body also makes it on its own. In this study, it emerged as an important signal that helps coordinate the anti-ageing benefits of longterm exercise.
How the Body Responds to Exercise
The research team followed 13 healthy men over six years to observe how the body reacts to both short-term and long-term exercise.
Using multiomics tools that track genes, proteins, metabolites, and gut bacteria, the scientists compared the body at rest, after a single 5 km run, and after a 25-day running programme.
Their results showed that the kidney plays a central role in managing the body’s response to exercise.
During sustained training, the kidney produced large increases in betaine, which helped send protective, anti-ageing signals throughout the body.
Solving the Exercise Paradox
The study also helps explain the “exercise paradox”, where a single intense workout causes stress but long-term training improves overall health.
A short run triggered temporary inflammation and “metabolic chaos”, while regular training restored balance and strengthened the immune system. SOURCE: ANI

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