Sports injuries — from acute muscle strains to tendon injuries and stress fractures — respond to nutritional interventions in ways that can meaningfully accelerate recovery timelines and reduce the muscle mass loss that typically accompanies enforced rest. The evidence on nutrition for injury recovery is less well-known than performance nutrition but has grown substantially. See our omega-3 guide, our protein guide, and our vitamin D guide for the related context.
The common mistake: not eating enough during injury
The most common nutritional error during sports injury is reducing food intake to match the reduced training load — making sense intuitively but counterproductive physiologically. Injury repair is metabolically expensive: protein synthesis for tissue repair, inflammatory resolution, immune response, and bone remodelling all require energy and specific nutrients. Maintaining adequate caloric intake — with particular emphasis on protein (1.6-2.2g/kg) — is the primary nutritional priority during injury recovery.
The key nutrients for injury repair
Protein at 1.6-2.2g/kg maintains muscle mass during forced rest (muscle atrophy occurs rapidly without adequate protein, even without training) and provides the amino acids for tissue repair. Vitamin C (500-1000mg daily) is essential for collagen synthesis — vitamin C deficiency severely impairs wound healing. Zinc (from food or supplementation at 15-25mg daily) accelerates wound healing and immune function. Creatine monohydrate (5g daily) reduces muscle atrophy during immobilisation. Omega-3 EPA/DHA moderates the inflammatory response to support optimal healing without excessive inflammation.
Bone injury nutrition
For stress fractures and other bone injuries: calcium (1000-1200mg daily from food or supplement) and vitamin D (25-50mcg daily) are the foundational requirements. Vitamin K2 activates osteocalcin for calcium incorporation into bone matrix. Collagen protein (or gelatin) provides the organic matrix that mineralises to form bone. Magnesium is required for calcium metabolism and bone formation. The bone injury healing timeline is significantly influenced by nutritional status — adequate nutrition can reduce healing time measurably.
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Frequently asked questions
How much protein do I actually need when injured and not training?
The evidence supports maintaining protein intake at 1.6-2.2g per kilogram of body weight during injury — the same as active training or higher. This is counterintuitive given reduced activity, but muscle atrophy during immobilisation occurs rapidly without adequate protein even in the absence of training stimulus, and tissue repair itself has significant protein demands. Reducing protein during injury to match reduced training load is a common and counterproductive error.
Does creatine monohydrate have any role in injury recovery beyond muscle building?
Yes. Research on creatine supplementation during immobilisation consistently shows reduced muscle atrophy compared to placebo, particularly in the first weeks of enforced rest following injury. The mechanism is through maintaining intramuscular creatine phosphate stores rather than the performance enhancement associated with training use. A standard dose of 5g daily during the immobilisation period is supported by the available evidence.
Are there specific foods that speed up tendon healing?
Collagen protein — from gelatin, bone broth, or collagen supplements — provides the hydroxyproline precursors for tendon collagen synthesis. Consuming 15-20g of collagen protein or gelatin with vitamin C approximately 60 minutes before any physiotherapy or movement work is supported by research from Keith Baar's group, which showed it optimised collagen synthesis more effectively than post-exercise timing. Vitamin C is essential in this context as a cofactor for collagen hydroxylation.
Is it normal for appetite to decrease when injured, and should I fight that?
Appetite suppression during injury is common, driven partly by reduced training load removing the exercise-stimulated appetite increase. However, the metabolic demands of injury repair — particularly in the acute inflammatory phase — mean that undereating delays healing. Prioritising protein-dense, calorie-adequate food even when appetite is reduced is the more productive approach than following appetite signals during the repair phase.
How does anti-inflammatory eating differ from simply eating healthily during injury?
Anti-inflammatory eating specifically targets the inflammatory signalling that, if excessive or prolonged, impairs tissue healing. The interventions with the most direct injury-recovery evidence are omega-3 fatty acids (EPA and DHA) which modulate prostaglandin and leukotriene pathways, polyphenol-rich foods which reduce oxidative stress, and avoiding ultra-processed food which elevates systemic inflammatory markers. A generally healthy diet overlaps with anti-inflammatory eating but the injury context gives specific nutrients — omega-3, vitamin C, zinc — greater priority.