What Is Dietary Inflammation?

How to Know if Dietary Inflammation is Slowing You Down

As a runner or triathlete, you’re always looking for ways to improve your performance, recover faster, and stay injury-free. But what if something in your diet is silently holding you back? Dietary inflammation refers to low-level, chronic inflammation triggered by certain foods and beverages. This isn’t the kind of inflammation you get from a sprained ankle—it’s subtler but more persistent, quietly wreaking havoc in your body.  But the good news is, by identifying and avoiding the top triggers, you can manage or reduce inflammation effectively.

Dietary inflammation could be affecting your ability to train and perform at your best. Here are some signs that dietary inflammation might be impacting your training.

  1. Sluggish Recovery: If your muscles feel sore for days after training, or you experience lingering fatigue, inflammation could be delaying your recovery.
  2. Frequent Injuries: Recurring injuries like tendinitis, shin splints, or joint pain might be a sign of chronic inflammation in your body.
  3. Poor Sleep Quality: Inflammation can mess with your sleep patterns, leaving you feeling tired, even after a full night’s rest.
  4. Stomach Upsets: As an athlete, you’re no stranger to digestive issues during training. But if you’re experiencing ongoing bloating, cramping, or diarrhoea, inflammation might be the culprit.
  5. Reduced Performance: Are you struggling to hit your target pace or power numbers in training? Inflammation can make it harder for your body to perform at its peak, even if your training is on point.

If you’re dealing with these symptoms, it might be worth considering whether inflammation is interfering with your progress. But don’t worry—you can manage it through simple dietary changes.

How Does Dietary Inflammation Impact Athletes?

1. Slows Recovery Time

Inflammation is part of your body’s natural healing process, but chronic inflammation can actually slow muscle recovery after hard sessions. If you’re not recovering properly between workouts, this could lead to overtraining syndrome, where performance decreases despite putting in the work. For triathletes and runners who juggle multiple workouts in a week, recovery is crucial—and dietary inflammation could be sabotaging that.

2. Increases Risk of Injury

Many sports injuries are the result of repetitive stress, but they can also be aggravated by chronic inflammation. If your body is in a constant state of low-level inflammation, your muscles, tendons, and joints may not heal as quickly, making you more prone to overuse injuries like tendinitis, shin splints, or runner’s knee.

3. Disrupts Energy Levels

Inflammation can interfere with your body’s ability to regulate blood sugar, leading to energy crashes or persistent fatigue. As a runner or triathlete, this is especially problematic, as consistent energy levels are key to completing long training sessions and races.

4. Interferes with Digestion and Nutrition Absorption

Many endurance athletes already struggle with digestive issues, particularly during long races or intense training sessions. Dietary inflammation can worsen these problems by causing inflammation in the gut, leading to bloating, discomfort, or diarrhoea during or after exercise. Inflammation in the gut can also impair nutrient absorption, making it harder for you to fuel properly.

Top 5 Dietary Causes of Inflammation for Athletes

Here are the most common culprits that might be impacting your performance:

1. Processed Carbohydrates

While runners and triathletes rely on carbs for fuel, processed and refined carbohydrates, like white bread, sugary snacks, and energy drinks high in refined sugars, can spike your blood sugar and lead to insulin resistance—both of which promote inflammation. Stick to whole grains and complex carbs for sustained energy without the inflammatory backlash.

2. Excessive Sugar Intake

Sugary gels, drinks, or snacks during long runs or rides may be necessary for energy, but consuming too much sugar throughout the day can increase inflammation. Try balancing your diet with anti-inflammatory foods and keep your sugar intake in check when you’re not training.

3. Omega-6 Fatty Acids

Some processed foods contain vegetable oils high in omega-6 fatty acids, like soybean oil and corn oil. While omega-6 fats are essential, an imbalance (too much omega-6 and not enough omega-3) can promote inflammation. Be mindful of your fat sources and focus on anti-inflammatory omega-3 fats from fish or flaxseeds.

4. Red and Processed Meats

Consuming too much red or processed meat (think burgers, sausages, or bacon) has been linked to inflammation. For recovery and muscle repair, lean protein sources like fish, chicken, or plant-based options are a better choice.

5. Artificial Additives

Artificial sweeteners and preservatives in sports nutrition products or processed foods can contribute to inflammation in sensitive individuals. While these might be useful for convenience, opting for cleaner, whole-food-based products during training and recovery can reduce inflammation.

How to Combat Dietary Inflammation and Enhance Performance

  1. Focus on Whole, Anti-Inflammatory Foods: Include plenty of colourful fruits and vegetables, lean proteins, whole grains, and healthy fats like avocados and olive oil. These foods are packed with nutrients that naturally combat inflammation.
  2. Incorporate Omega-3 Rich Foods: Fatty fish (like salmon), flaxseeds, and walnuts are great sources of omega-3 fatty acids, which can help reduce inflammation.
  3. Use Spices and Herbs: Anti-inflammatory spices like turmeric and ginger can be easily added to meals or smoothies. Both of these spices are known for their recovery benefits, particularly for athletes.
  4. Balance Your Carbs: Carbs are essential for endurance athletes, but choosing the right ones is key. Opt for complex carbohydrates like quinoa, oats, and sweet potatoes, which provide steady energy without spiking your blood sugar.
  5. Stay Hydrated: Proper hydration helps reduce inflammation and supports recovery. Make sure you’re drinking enough water throughout the day, especially after hard sessions.
  6. Listen to Your Body: Keep an eye on how you feel after eating. If you notice certain foods seem to trigger digestive issues, fatigue, or soreness, they may be causing inflammation.

For runners and triathletes, performance isn’t just about how hard you train—it’s about how well you recover and fuel your body. Chronic inflammation caused by your diet can undermine your best efforts, leaving you sore, tired, and underperforming. By focusing on whole foods, balancing your intake of fats and carbs, and incorporating anti-inflammatory options, you can help manage inflammation, recover faster, and perform better.

Your body works hard for you during every run, swim, and ride—make sure your diet is helping, not hindering, your progress.

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Personal Trainer & Nutritionist: Jen Coppock
Llangollen, North Wales