A new systematic review and meta-analysis suggests that diet plays a role in injury risk for runners, particularly for women. The study, which analyzed data from nearly 6,000 adult distance runners, found that those who suffered injuries, including bone stress injuries, had lower intakes of calories, fat, and fiber.
Researchers identified three key dietary differences between injured and uninjured runners. Injured female runners consumed about 300 to 450 fewer calories per day than those who stayed injury-free. They also ate about 20 grams less fat per day on average. Additionally, runners of all genders with lower daily fiber intake, around 3 grams less, had a higher risk of injury.
The findings point to the role of energy and fat in injury prevention. Calories fuel muscle repair and hormone production. When the body is underfueled, it may reduce functions like bone remodeling or reproductive hormone output. Fat is needed to absorb vitamins D and K, produce sex hormones, and regulate inflammation. Without enough fat, bones, muscles, and connective tissues may not get the support they need for recovery.
The study also highlights a link between gut health and musculoskeletal health. Fiber-rich diets support a healthy gut microbiome, which may help with injury prevention and healing. This is especially relevant for endurance athletes under constant physical stress.
For runners and anyone increasing their workout intensity, the study reinforces a key point in sports nutrition: as activity rises, nutritional needs also rise. When training more, calorie, fat, and fiber intake should increase accordingly. Without this adjustment, the risk of stress injuries, poor recovery, and hormonal disruptions may rise.
The difference in intake between injured and uninjured runners was relatively small. A few hundred calories, an extra tablespoon of olive oil, or a serving of berries and beans could help improve recovery and injury resilience. To meet these needs, balanced meals with whole foods and healthy fats are recommended. Examples include adding avocado or nut butter to a post-run smoothie, snacking on trail mix with almonds and walnuts, cooking vegetables in olive oil, adding beans or lentils to salads, and choosing whole grains like oats and quinoa.
This research suggests that nutrition is not just fuel but a foundation that helps protect the body from injury. For anyone who is active, eating enough to support that activity is part of the plan for staying strong and injury-free.
