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MIP Colostrum, Exercise and Gut-Immune Health

Explore how demanding exercise can affect digestive balance and immune function, what colostrum research tells us, and where MIP Colostrum fits into an active adult’s nutrition routine.

Exercise is normally associated with health and fitness, yet a hard training session can place considerable short-term demands on the digestive system. During strenuous or prolonged activity, blood flow is redirected towards working muscles and the skin, core temperature may rise, and repeated movement can add mechanical stress. For some athletes, the result is nausea, cramping, urgency or other gastrointestinal discomfort.

Researchers have therefore studied whether nutrition strategies including bovine colostrum can influence laboratory markers of intestinal cell stress and permeability around exercise. Some findings are encouraging, but they come from small studies using particular products, doses and exercise protocols. They do not show that MIP Colostrum prevents symptoms, improves performance or protects against heat illness.

Article takeaways

  • Strenuous exercise can temporarily challenge the gut through reduced intestinal blood flow, heat, mechanical movement and nutrition-related factors.
  • Some controlled studies reported smaller changes in selected intestinal-damage or permeability markers after bovine-colostrum supplementation.
  • Most relevant trials used 20 g/day or other research protocols not MIP’s standard 2 g serving and marker changes do not prove better performance or fewer digestive symptoms.

As exercise intensity increases, more blood is directed to the muscles and skin. Blood flow to the digestive organs can fall, particularly during prolonged endurance activity. Heat, dehydration and high exercise intensity can amplify this reduction and place temporary stress on intestinal cells.

Running also produces repeated impact and movement. The timing, type and concentration of food and drink can matter, while individual tolerance varies considerably. Symptoms may therefore reflect several overlapping factors rather than one single cause.

Most people recover normally after exercise. Persistent pain, bleeding, repeated vomiting, severe diarrhoea, faintness or symptoms suggestive of heat illness require appropriate medical assessment rather than self-treatment with a supplement.

The intestinal lining controls what passes from the digestive tract into the body. During demanding exercise, temporary changes in cell integrity and the junctions between cells can allow test substances to cross the lining more readily. Researchers commonly assess this indirectly with dual-sugar urine tests or blood markers such as intestinal fatty acid-binding protein (I-FABP).

These are research measurements, not a simple diagnosis of “leaky gut”. Different markers reflect different processes, and results can vary with the exercise model, heat exposure, hydration status, test timing and laboratory method.

A smaller change in a permeability marker can be scientifically interesting, but it does not automatically mean that an athlete experienced fewer symptoms, recovered faster or performed better.

Bovine colostrum contains naturally occurring proteins, immunoglobulins, lactoferrin, peptides and growth-related factors. Because these components first encounter the digestive tract after consumption, researchers have investigated possible local interactions with the intestinal lining.

Laboratory cell models have explored responses to heat and other stressors, while human exercise trials have measured permeability and intestinal-cell-damage markers before and after supplementation. Cell studies may help explain a possible mechanism, but they cannot establish what will happen in an athlete taking a finished consumer product.

Bovine colostrum should therefore be discussed as a complex food supplement under investigation not as a medicine that seals the gut or makes athletes resistant to heat stress.

A small 2011 double-blind crossover study involved 12 volunteers who completed 14 days of bovine colostrum and placebo supplementation before a standardized high-intensity running test. Exercise increased the urinary lactulose-to-rhamnose ratio in the placebo condition, while the rise was smaller after colostrum. The study also included cell experiments, which are mechanistic evidence rather than clinical outcomes.

A 2017 randomized crossover study involved 18 men. Participants used 20 g/day of bovine colostrum or placebo for 14 days before exercise. After colostrum, the post-exercise rise in the lactulose-to-rhamnose ratio was smaller, and plasma I-FABP did not rise in the same way as it did after placebo.

Both studies assessed selected biological markers in tightly controlled settings. Neither establishes that MIP Colostrum at 2 g/day prevents gastrointestinal symptoms or improves race performance, and neither justifies a heat-stroke-prevention claim.

A 2017 systematic review of exercise-induced gastrointestinal disturbance concluded that exercise intensity, duration, heat and running can contribute to gut damage, increased permeability and symptoms. It also highlighted the complexity of translating laboratory markers into practical outcomes.

A 2022 systematic review of dietary supplements included 27 studies across several strategies. Most bovine-colostrum studies reported reductions in selected markers of gut-cell damage or permeability, but protocols and outcomes were highly heterogeneous. The authors stated that further research is needed to determine whether these changes improve gastrointestinal or performance outcomes.

A separate 2022 review focused on bovine colostrum and athlete permeability research and identified nine eligible studies. Its overall conclusion was favourable but still called for better randomized, placebo-controlled research and clearer dose schedules.

Many athlete studies used 20 g/day for approximately two weeks; other research has used weight-based or different dosing schedules. The products also differed in collection, processing, composition and biological activity. A gram amount alone is not a reliable measure of colostrum quality.

MIP’s standard adult serving is 2 g daily. With batch-verified IgG of 20–25%, this provides approximately 400–500 mg of IgG per serving. MIP Colostrum is produced from fresh, never-frozen New Zealand colostrum collected from the first two milkings.

Those specifications describe MIP accurately, but they do not prove that 2 g of MIP is equivalent or superior to 20 g/day or a weight-based dose of another research product. Athletes should not increase their MIP serving simply to imitate a study protocol.

A supplement is only one small part of an athlete’s digestive routine. Training the gut gradually, practising race-day nutrition in training, maintaining appropriate hydration, allowing adequate recovery and choosing familiar foods around key sessions can all be important.

More is not always better. Large meals, highly concentrated carbohydrate intake, unfamiliar products or excessive fluid can create their own problems. Individual strategies should reflect the sport, duration, climate, medical history and tolerance.

Athletes with recurring or severe gastrointestinal symptoms should seek qualified medical and sports-nutrition advice. Symptoms should not automatically be attributed to exercise or managed by removing major food groups without assessment.

Adults who choose MIP Colostrum may include the standard 2 g daily serving as part of a consistent nutrition routine. Individual needs and routines can vary, and some adults choose additional servings during periods of demanding training or recovery, following the individual product label.

Taking more should not be interpreted as reproducing the 20 g/day protocols used with different products in research.

People with a milk allergy, those who are pregnant or taking medication, and those with diagnosed gastrointestinal conditions or persistent or concerning exercise-related symptoms should obtain appropriate professional advice.

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References

  1. Costa RJS, et al. Systematic review: exercise-induced gastrointestinal syndrome—implications for health and intestinal disease. Alimentary Pharmacology & Therapeutics. 2017;46(3):246–265. PMID: 28589631.
  2. Marchbank T, et al. The nutriceutical bovine colostrum truncates the increase in gut permeability caused by heavy exercise in athletes. American Journal of Physiology—Gastrointestinal and Liver Physiology. 2011;300(3):G477–G484. PMID: 21148400.
  3. March DS, et al. Intestinal fatty acid-binding protein and gut permeability responses to exercise. European Journal of Applied Physiology. 2017;117(5):931–941. PMID: 28290057. Note: several authors reported previous research funding involving colostrum suppliers; no funding was received for this study.
  4. Chantler S, et al. A systematic review: Role of dietary supplements on markers of exercise-associated gut damage and permeability. PLOS ONE. 2022;17(4):e0266379. PMID: 35417467. Note: one author reported unrelated funding and honoraria from colostrum suppliers.
  5. Dziewiecka H, et al. A systematic review of the influence of bovine colostrum supplementation on leaky gut syndrome in athletes: diagnostic biomarkers and future directions. Nutrients. 2022;14(12):2512. PMID: 35745242.
  6. Davison G. The use of bovine colostrum in sport and exercise. Nutrients. 2021;13(6):1789. PMID: 34073917. Note: the author reported previous research funding and honoraria from colostrum suppliers.

This article provides general nutritional information and is not intended to diagnose, treat, cure or prevent any disease. Individual needs vary. Follow the product label and seek advice from a qualified health professional where appropriate.