Joints and bones after 40 — collagen, protein and vitamin D

Why joints and bones need collagen

Type I collagen makes up about 90% of bone protein. It is collagen that gives bone its elasticity so it does not snap like dry bread on a normal fall. Calcium and phosphorus mineralise that collagen scaffold, but it is the collagen that provides structure.

After 30 the body starts to lose more collagen than it produces. After menopause a woman can lose 5% of bone density per year in the early years. The result is increased risk of osteopenia, osteoporosis and low-energy fractures (for example a wrist fracture from a standing-height fall).

In joints, type II collagen builds the cartilage covering bone ends. When cartilage wears out (osteoarthritis), bones rub against each other — pain, morning stiffness and limited movement appear.

What clinical research shows

Landmark study by König et al. (2018): 102 postmenopausal women with reduced bone mineral density (BMD) received 5 g of hydrolysed collagen or placebo daily for 12 months.

Result: women on collagen showed a statistically significant increase in BMD in the spine and hip, while the placebo group lost bone mass. Mechanism: peptides stimulate osteoblasts (bone-building cells) and inhibit osteoclasts (bone-resorbing cells).

For joints: studies in athletes (Clark et al., 2008) showed that 10 g of collagen daily for 24 weeks reduced joint pain in active people. In patients with osteoarthritis (Zdzieblik et al., 2017), joint function improved after 12 weeks.

These results relate to the specific preparations and doses used in the cited studies — they do not refer directly to products sold at iLabU. No health claims have been authorised in the EU for collagen relating to skin, hair, nails, joints or bones, so we do not attribute these effects to our product. Food supplements should not be used as a substitute for a varied diet.

What else matters for your bones

To maintain healthy bones, your body needs, among other things:

• Vitamin D — without it calcium is not absorbed from the gut nor incorporated into bone. According to the OPOLHEALTH programme, up to 90% of Poles are deficient in winter. • Calcium — 1000–1200 mg daily from diet (dairy, sardines, broccoli, sesame). • Magnesium — a cofactor for vitamin D enzymes. • Vitamin K2 — directs calcium to bone, not arteries. • Protein — protein contributes to the maintenance of normal bones; agree your individual needs with a doctor or dietitian.

No supplement replaces a varied diet, exercise and medical check-ups.

Your 5-step plan for healthy bones

Step 1: VITAMIN D TEST. Run a home 25(OH)D test (10 min, finger-prick blood). Deficient? Agree the supplementation dose with a doctor. Step 2: PROTEIN. Make sure your diet contains enough protein. You can complement it with a food supplement such as collagen peptides — 20 g (2 scoops) a day. Step 3: DIETARY CALCIUM. Milk/yoghurt, sesame, sardines, broccoli, calcium-rich mineral water. Target: 1000 mg/day. Step 4: RESISTANCE TRAINING. Strength training 2×/week — exercise is one of the most important stimuli for bone. Step 5: RE-CHECK. Repeat the vitamin D test after three months. DEXA bone densitometry every two years after age 50.

Related product

• Vitamin D Test 34.00 PLN

Frequently asked questions

Does collagen help joint pain?

Collagen and joints are an area of ongoing research, but no health claim relating to joints has been authorised for collagen in the EU. Always discuss joint pain with a doctor. Protein — including from collagen peptides — contributes to the maintenance of normal bones.

When do we start losing bone mass?

After age 20 bone mineral density declines on average 0.5–1% per year. Postmenopausal women may lose up to 5% per year in the early years. Low vitamin D, calcium deficiency and lack of movement accelerate the process.

How do I check whether I have enough vitamin D?

A home vitamin D test (10 minutes, finger-prick blood) shows 25(OH)D deficiency. According to the OPOLHEALTH programme, up to 90% of Poles are deficient in winter. Vitamin D contributes to normal absorption of calcium and to the maintenance of normal bones. Discuss the result with a doctor.