Anybody reading this probably has a good understanding of what foods can improve performance and recovery pre- and post-workout. But what if some of the very same foods you consume on a daily basis, thought to be healthy, were actually killing your performance and slowing your recovery?

How could this be so? One word – inflammation.

I’m not talking about the inflammation in muscle or joint tissue that comes with hard training or an injury. The inflammation that could be robbing you of gains in the gym is not felt like the aching in your muscles a couple of days after a grueling workout. This inflammation is often silent, and is going on under the hood.

Where? In your gut.

Now before you think this is going to be another article pitching a cleanse protocol or probiotic, I’ll tell you that you’re throwing your money away on those products if you don’t put a long-term system in place that can prevent the dietary injuries you may be subjecting yourself to on a daily basis.

Your gut lining has a very important role as the primary barrier of defense against foreign invaders such as bacteria, fungi, and viruses. It also has an integral relationship with the immune system, 70-80% of which is housed within the wall of the gastrointestinal (GI) tract.

The immune system responds to injury from external toxins (pesticides, herbicides, chemical in tap water, artificial colors or preservatives), internal toxins (the body’s “exhaust products” from digestion of foods), infection, and injury by mounting an inflammatory response to wall off, remove the offender, and allow the system to heal. Therefore, inflammation is a very necessary function for recovery.

Dietary injuries on the other hand, due to food allergies, intolerances, or sensitivities will also trigger a significant immune system mediated or non-immune system mediated response causing significant inflammation within the gut. With repeated exposure to certain foods the gut lining becomes compromised, leading to what’s called a leaky gut.  The normally tight cellular junctions in the gut wall become compromised and allow entry of foreign invaders and larger food particles into the blood stream.

  • Did you know: Studies have shown that even intense physical exercise of one hour in duration can cause short-term small intestinal injury and gut barrier dysfunction in otherwise healthy individuals.1
  • This is a very good reason who some people experience additional GI distress if they eat anything too close to a workout.

This resulting combination of ingestion of inflammatory foods coupled with continued bouts of exercise can lead to increased systemic inflammation.  The immune system, and your body as a whole, has to expend a considerable amount of resources to battle against toxins, inflammatory foods, and true foreign invaders, now that the barrier of defense is compromised.

Because the gut is compromised in a constant state of inflammation, it is not able to optimally process and extract vital nutrients from the good foods being consumed.

Symptoms of this systemic inflammatory state typically includes GI distress (bloating, gas, pain) of some degree, but also can include diffuse muscular or joint pain, fatigue, poor sleep quality, a lack of metal clarity or focus, headaches, irritability, anxiety, or depression.

Sounds very much like an over-trained state, wouldn’t you say? Everyone nowadays seems to be suffering from “adrenal fatigue” from over-training, but is that what is really going on here?

Going a step further, about 95% of serotonin production occurs in the gut, often why the GI tract is called the second brain. Serotonin is a neurotransmitter that has a direct impact on mood, mental focus, and sleep cycle quality, but it is also strongly linked to the release of growth hormone (GH).

You undoubtedly know how important GH is for repair of damaged muscle tissue and stimulation of new muscle growth, but it also has a significant impact on mood, carbohydrate metabolism, and indirectly to sleep quality, as production peaks during sleep.

We can make the leap then that if the GI tract is not functioning optimally due to repeated dietary injury and chronic systemic inflammation, serotonin and GH production is going to plummet.

So are you truly suffering from adrenal fatigue, or are you really suffering from chronic systemic inflammation from your diet?

To determine what foods are most inflammatory, I’ll be back with the second part of Over-trained or over-inflamed?

If you really want to cut to the chase, determine what foods could be wreaking havoc on your gut, cut out the daily purple pill, and improve your performance, we can help with a simple test. I’ll be telling you more about that in Part 2.

Committed to your health,

Dr. Tait


1. Van Wijck K, Van Eijk HM, Buurman WA, Dejong CH. Exercise-induced splanchnic hypo-perfusion results in gut dysfunction in healthy men. PLoS One. 2011;6(7);E22366.

2. Mayo Foundation for Medical Education and Research, “Mayo Clinic Discovers New Genetic Candidates for Irritable Bowel Syndrome,

July 22, 2011.

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