It’s no coincidence that many older people have difficulty getting up from a chair. What most people simply consider “aging” is often a vitamin D deficiency. In fact, up to 60% of adults over 50 have a vitamin D deficiency, which directly impacts leg strength and balance.
Vitamin D plays an essential role in activating muscle function. It contributes to maintaining the integrity of muscle fibers and supports bone density, thus ensuring the legs have the structural stability necessary for smooth and confident movements.
Science: A study conducted by the American Geriatrics Society has shown that older people who take vitamin D supplements have a 23% lower risk of falling than those who do not.
Optimal daily dose: 800 to 2,000 IU, preferably in the form of vitamin D3 (more bioavailable than D2).
Best sources:
15 to 20 minutes of sunshine in the middle of the day
Oily fish (such as salmon and mackerel)
Vitamin D3 supplements to be taken with healthy fats
Tip: Combine them with magnesium and vitamin K2 for better absorption and optimal bone support.
7. Magnesium: the ally of muscle relaxation
If you have ever woken up with a start with a painful leg cramp, your body may need magnesium.
Magnesium is essential for muscle relaxation after a cramp. Low magnesium levels can keep muscles tense, in a semi-contracted state, causing sudden nighttime cramps or a feeling of tightness during the day.
Magnesium also regulates nerve transmission and improves blood circulation in the leg muscles, thus ensuring a sufficient supply of oxygen and nutrients.
Scientific explanation: Magnesium contributes to maintaining calcium levels in muscle tissue. Magnesium deficiency leads to calcium accumulation and excessive muscle contraction.
Recommended daily dose: 320 to 420 mg
Main sources:
Spinach and dark green leafy vegetables
Pumpkin seeds
Dark chocolate
Magnesium glycinate supplements (the most easily absorbed form)
Tip: Magnesium also improves sleep, which is essential for muscle recovery.
6. Vitamin B12 – Protection of nerve transmission
Muscle strength is useless if the nerves aren’t functioning properly. If you’ve ever experienced tingling, numbness, or unexplained weakness in your legs, you may be suffering from a vitamin B12 deficiency, a common but rarely diagnosed problem after age 50.
Vitamin B12 is responsible for maintaining the myelin sheath, the protective insulation of nerves. When this sheath is damaged, the signals between the brain and muscles are disrupted, leading to coordination problems and fatigue.
Research: Up to 43% of adults over 60 have a vitamin B12 deficiency, often mistaken for arthritis or neuropathy.
Best absorption methods:
Methylcobalamin (active form)
Sublingual drops or tablets
Vitamin B12 injections (in cases of severe deficiency)
Note: Vitamin B12 from food (meat, eggs) is less well absorbed by older people due to a decrease in stomach acidity.
Quick solution: Add nutritional yeast to your meals for a tasty boost of vitamin B12.
5. Collagen – Tissue Regenerator
Do you have difficulty bending over or tying your shoes? This stiffness could be due to a loss of collagen.
Collagen is an essential protein that ensures the cohesion of joints, tendons, and connective tissues. After age 50, collagen production decreases considerably, which weakens joints and reduces mobility.
Important types:
Types I and III – support muscle and tendon strength
Type II – regenerates articular cartilage, particularly in the knees and hips
Best ways to regenerate collagen:
Bone broth (all types of collagen)
Hydrolyzed collagen peptides + vitamin C
Foods rich in collagen such as chicken skin, sardines and eggs
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