Boost Your Running Performance: How Fiber, Healthy Fats, and Increased Calories Can Prevent Injuries

When it comes to running, the relationship between diet and injury risk is more significant than many realize. A recent study highlights that what you eat can play a crucial role in preventing running-related injuries. Understanding the connection between your diet and overall running performance is essential for all athletes.
According to estimates, up to 80% of long-distance runners and 44% of short-distance runners experience at least one injury during their running careers. However, the findings from a recent study suggest that appropriate dietary choices could help mitigate these injuries.
Published in the Journal of Science and Medicine in Sport, the research reviewed over a dozen studies involving nearly 6,000 distance runners. This analysis uncovered compelling evidence regarding the influence of calories, fat, and fiber on injury risk.
“Running-related injuries are common,” stated Erin Colebatch, an accredited dietitian and a master’s candidate at the University of South Australia. “While a previous injury is the strongest risk factor, the cause of running injuries is likely multifactorial.”
How Nutrition Affects Injury Risk
As noted in the study, a few systematic reviews have explored the link between diet and running injuries, but many were outdated and did not focus solely on dietary factors.
“With so little high-quality evidence, an updated review was clearly needed,” Colebatch explained.
The researchers analyzed 15 studies for their recent findings, revealing several critical points:
- Injured female runners consumed 449 fewer calories and 20 fewer grams of fat daily compared to their peers who did not sustain injuries.
- Females with lower caloric and fat intake had a heightened risk of both general and bone-stress injuries.
- Injured runners had a daily fiber intake that was three grams less than that of their injury-free counterparts.
Interestingly, factors such as protein, alcohol, carbohydrates, and calcium did not appear to affect injury risk.
Dr. Sarah Merrill, the medical director of the Scripps Ranch Family Medicine Clinic at UC San Diego, noted, “The strength of this study is that it was able to bring together the results of much data and draw conclusions.”
Registered dietitian Yasi Ansari from UCLA Health Santa Monica added that this research fills a vital gap by linking dietary patterns to injury risk while emphasizing adequate nutrition’s role in runner health.
However, the study also has limitations. Some relied on self-reporting, which can often be inaccurate, and they predominantly focused on English-language studies. The variability in study populations and injury definitions made comparisons challenging.
Understanding the Risks of Insufficient Fat, Fiber, and Calories
Dr. Merrill mentioned that insufficient caloric intake can lead to higher injury risks among runners.
“Runners often have less muscle bulk and fat for energy reserves,” she explained. “If they attempt to repair muscles without sufficient nutrition, their bodies might draw from bone nutrients, leading to injuries.”
Furthermore, fat is essential for absorbing vitamins that contribute to bone and muscle health. Colebatch emphasizes that adequate fat consumption aids in hormone production and inflammation management, which are critical for injury prevention.
Adequate dietary fiber is also vital for minimizing inflammation and supporting gut health. Colebatch states, “A balanced microbiome can boost immune function and regulate pain sensitivity, while disruptions can heighten bone stress injury risks.”
People who consume higher fiber diets often enjoy additional benefits from foods rich in polyphenols, such as berries, which promote musculoskeletal health.
Strategies for Fueling to Prevent Injuries
While diet is just one component of running injury risk, it cannot be overlooked. Ensuring sufficient nutrition is vital for safety.
Ansari advises runners to aim for well-balanced meals that provide enough calories, healthy fats, fiber-rich carbohydrates like fruits and whole grains, and adequate protein. This balance not only supports recovery but may also lower injury risks.
As runners increase their mileage, they should consider the impact on their energy balance, potentially augmenting fiber and healthy fats from nutritious sources like nuts and avocados.
The American Sports and Performance Dietitians Association recommends that nutrient needs vary based on individual goals and activity levels, but a general guideline is:
- 50% to 65% of daily calories from carbohydrates
- 20% to 35% from fats
- 10% to 20% from protein
Consulting a healthcare professional is advisable to develop a nutritional plan tailored to your level of activity and lifestyle.
“Nutrition plays a significant role not just in performance but in long-term health and well-being,” Ansari concludes.