The main causes:
The passage of time…
With age, certain hormones essential for muscle maintenance (such as IGF-1 or growth hormone) decline.
Muscle recovery slows down, nutrient absorption becomes less efficient… In short, the body weakens.
Habits that aren’t “muscle-friendly”
Skipping meals, avoiding protein, not exercising enough, sitting too long…
➤ Inactivity is even the number one risk factor.
A vitamin D deficiency
Very common in France, it has a direct impact on muscle tone.
Some silent diseases (the rest of the text seems to continue).
