Joints, Cartilage and What Actually Protects Them
Connective tissue is the limiting factor in long training careers. Most of what is sold to protect it does very little.
Muscle recovers quickly. Tendons, ligaments and cartilage do not, and over a long career they become
the limiting factor rather than strength. The supplement industry addresses this enthusiastically and,
for the most part, ineffectively.
Why connective tissue is different
Poor vascularisation means slow healing. Cartilage has no blood supply at all, relying on diffusion
through synovial fluid, which is why cartilage damage largely does not repair.
Collagen turnover is slow, and tendon adapts to load more slowly than muscle does. That mismatch is
the mechanism behind most overuse injury — the muscle can handle a jump in training that the tendon
cannot.
What the evidence supports
Mechanical loading is the strongest intervention, which is unwelcome news for anyone hoping for a
capsule. Tendon adapts to progressive load, and eccentric-biased work has the best evidence in
tendinopathy. It requires months.
Collagen with vitamin C before loading has emerging and moderately encouraging evidence.
Glucosamine and chondroitin have a large and genuinely mixed literature — some trials show modest
symptomatic benefit in knee osteoarthritis, others show nothing.
chondroitin sulfate and glucosamine chondroitin products sit in that ambiguous space: unlikely to
harm, possibly mildly helpful, frequently oversold.
What does not work
Most topical preparations do not penetrate meaningfully. Vague joint-support blends without effective
doses of anything are common. And the general grab-bag categories some storefronts label simply
others are where this kind of product tends to live, which is itself informative.
Anti-inflammatories: useful and double-edged
NSAIDs reduce pain and inflammation effectively. There is also reasonable evidence that habitual use
blunts tendon adaptation and some hypertrophy signalling, which makes routine prophylactic use a poor
idea.
Use them when pain limits function, not as a pre-workout. buy ibuprofen listings are the obvious
example, and the gastric and renal considerations apply particularly to anyone also dehydrated from
training or a cut.
Corticosteroid injections deserve their own caution. They relieve pain well and repeated injections
into tendon are associated with structural weakening. Topical steroids such as
clobetasol propionate treat inflammatory skin conditions and are potent enough to thin skin with
extended use.
The peptide claims
Growth hormone secretagogues raise IGF-1, which has plausible relevance to collagen synthesis. People
buy sermorelin on that basis. The human outcome data for connective tissue specifically is thin, and
the insulin sensitivity cost is documented. Plausible mechanism, unproven benefit.
Sleep is the underrated intervention
Tissue repair is concentrated during sleep. Chronic short sleep measurably impairs healing. Which makes
sleep quality a connective-tissue intervention with better evidence than most of the supplement aisle.
Which is why medicating poor sleep rather than fixing it is short-sighted. buy melatonin products
help with timing; trazodone uk listings relate to a sedating antidepressant used off-label for sleep;
buy amlodipine and propranolol are cardiovascular drugs whose fatigue side effects can worsen the
picture. levetiracetam is an epilepsy medicine, not a sleep aid, despite appearing in that drawer.
What to actually do
Progress load gradually — the commonest cause of tendon injury is a jump in volume. Do eccentric work
for existing tendinopathy and give it three months. Sleep properly. Take collagen with vitamin C before
loading if you want a low-risk bet. Try glucosamine and chondroitin for symptomatic knee arthritis
knowing the evidence is mixed. Use NSAIDs for genuine pain rather than routinely.
And accept that the honest answer is patience and progressive load, which is why the supplement industry
sells something else.
Information only - not medical advice. Several substances referenced are prescription-only medicines or controlled drugs in the UK; supply is a criminal offence regardless of profit. Anyone considering use should obtain baseline blood work and consult a qualified clinician.