Female weightlifter using Moonstone Stone Stopper for kidney stone prevention

The Relationship between Weightlifting and Kidney Stones: What Every Gym-Goer Should Know

Everyone wants to live a long, healthy life, and for many that includes going to the gym. While this can lead to a healthier overall life, studies have shown that moderate to intense physical exercise may increase the risk of kidney stone formation and more serious kidney related diseases. This is especially true when it comes to proper hydration before, during and after a workout, but if a workout is too intense the muscles become damaged, which causes myoglobin to be released into the bloodstream. This protein is difficult to pass through our body's filtration system, especially the kidneys! 

So what can we do about it? Read on to learn more. 

Male weightlifting and preventing kidney stones with Moonstone


Although moderate-intensity exercises are safe in most cases, strenuous and high-intensity exercises may lead to serious health issues, including rhabdomyolysis and acute kidney injury (AKI).

  • Spinning / Cycling – Numerous studies have shown those who take part in spin classes can have extremely high levels of creatine kinase (CK) in their blood. This causes the kidneys to work overtime and leads otherwise healthy individuals at any age to being hospitalized.
  • High Intensity Training – High intensity interval resistance training (HIIRT) in particular can cause muscle damage and raise biomarkers of acute kidney injury. It involves a burst of intense, heavy resistance exercises followed by a period of rest. Just a single HIIRT session is enough to cause significant elevations in CK, myoglobin, and other biomarkers that are indicative of kidney injury.
  • Weightlifting – Lifting weights that are too heavy can cause muscle and joint damage, spinal injuries (e.g.: herniated discs), tear a heart artery, or overload your blood stream with proteins that lead to kidney failure. The latter two in particular can lead to hospitalization and, in extreme cases, result in death.


While workouts can be a huge driver in overtaxing the body if done incorrectly, there are a variety of other factors that have a direct correlation to increased kidney stone risk. Factors with a direct correlation that also contribute a rise in kidney stone risk include:

  • Certain DietsDiets high in protein (especially animal protein: meat, poultry, eggs, and seafoods) boosts the level of uric acid which leads to kidney stones, while also reducing levels of urinary citrate which prevents stones from forming. Other common food consumed by health-conscious individuals that contain oxalates (that lead to kidney stones) include spinach, rhubarb, almonds & cashews, beets, okra, raspberries, sweet potatoes, and even stevia sweeteners.
  • Dehydration – Not drinking enough water increases your risk of kidney stones and exertional rhabdomyolysis.
    • Rhabdomyolysis happens when you push too hard in the gym (to the point of muscle exhaustion and damage), don’t stay hydrated and/or work out during high temperatures. While men are more prone, there has been an increase in women being impacted as well. It’s also important to note fitness level does not impact your chances – it’s about exertion level.
    • Symptoms include intense muscle pain, spasms, weakness, stiffening, swelling, and dark urine – if you begin to experience any of these symptoms, head to the ER immediately! Many recover through intravenous fluids & blood test monitoring at the hospital, but it is worth noting that acute kidney injury (AKI) is also seen in up to 58% of patients with rhabdomyolysis.
  • Supplements & Medications – Dietary supplements and pain medications can also increase your risk, but specific gym-related supplements can as well. Always ask your doctor about supplementation and contraindications before adding anything new to your daily routine. 


When you begin training and working out, most people consume high amounts of protein, add supplements to combat muscle fatigue & lactic acid buildup, and more. By consuming excessive amounts of nutritional supplements as well as abuse of anabolic steroids, there is a high risk for acute and potentially chronic kidney injury.

  • Protein Shakes – As previously discussed, high-protein diets (including protein powders & shakes) can lead to overexertion of the kidneys and an increase in kidney stone potential.
  • High Creatine & Vitamin Intake – While the old adage “everything in moderation” can be true, a high intake of creatine supplements and other vitamins like A, D and E can carry increased risks as well.
  • Anabolic steroids – The dangers and harm to health that anabolic steroids can cause should be a no-brainer, but many athletes still use them to gain muscle mass and strength. While these drugs are known to impair endocrine and liver functions, it also leads to protein leaking into the urine leading to severe reductions in kidney function. This kidney damage has shown to be more severe than in morbidly obese patients.


When working out, you can help prevent kidney stones & injury by:

  • Working up to higher weights & more intense workouts
  • Warm up and cool down
  • Use spotters when you do major lifts
  • Use proper lifting techniques
  • Wear proper shoes and weightlifting belts & gloves
  • Don’t exercise any set of muscles more than 3 times a week

Also, make sure your diet includes foods that are high in potassium and magnesium to help prevent kidney stones. Increase your intake of whole grains and cruciferous vegetables (such potassium-rich foods as brussels sprouts, broccoli, and kale decrease calcium loss) as well.


In addition to working your way up to heavier weights, and ensuring proper hydration, individuals who are planning on consistently weight lifting might want to consider adding a doctor recommended kidney stone supplement to their routines. 

Moonstone Stone Stopper™ is a gentle alternative to traditional kidney stone treatment and the first OTC supplement designed to address kidney stone crystallization. Moonstone Stone Stopper is a natural supplement that contains alkali citrate, an important ingredient that has been shown to help prevent the formation of kidney stones. Alkali citrate works by increasing the pH of the urine, making it less acidic and reducing the likelihood of stone formation. This can be especially beneficial for weight lifters, who may be more prone to developing kidney stones due to the high protein content of their diets.

In addition to its active ingredients, Moonstone powder beverages have no added sugar, are low in sodium, and are an excellent source of magnesium and vitamin B6.  Moonstone may also appeal to people seeking clean label products because it is also non-GMO, and free of wheat, fat, and soy.

Available in capsules, gummies, and ready-to-mix powder beverages in a variety of delicious flavors, add it to your water before, during, and/or after workouts. The beverages come in Lemonade, Wild Berry, Cranberry Raspberry and Tropical flavors. With free shipping, now is the best time to try Moonstone Stone Stopper™ for yourself. 

Adding kidney stone prevention to your weightlifting and workout routine has never been easier. Just mix the powder with 16 ounces of carbonated or non-carbonated water, stir well, and enjoy on the go! 

Moonstone Stone Stopper Kidney Stone Prevention Supplements
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