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Supplements and Kidney Health: Separating the Good from the Bad


The kidneys play a vital role in filtering waste and excess fluids from the body, and maintaining proper kidney function is crucial for overall health. While some supplements can support kidney health, others may be harmful or even toxic to the kidneys. In this blog, we'll answer some common questions about supplements and kidney health.

What Supplements are Bad for Kidneys?

Certain supplements can be harmful to the kidneys, particularly when taken in excessive amounts or for prolonged periods of time. Some examples include:

  • Creatine - This supplement is often used by athletes and bodybuilders to increase muscle mass and strength, but it has been associated with kidney damage in some studies.
  • Vitamin D - While vitamin D is important for overall health, excessive intake can lead to hypercalcemia, a condition in which there is too much calcium in the blood. This can lead to kidney damage and the formation of kidney stones.
  • Herbal supplements - Some herbs, such as St. John's Wort and Echinacea, have been associated with kidney damage and should be used with caution.

What Supplements are Good for Kidneys?

On the other hand, there are several supplements that may be beneficial for kidney health, including:

  • Omega-3 fatty acids - These healthy fats, found in fish oil supplements, have been shown to have anti-inflammatory effects and may help protect against kidney damage.
  • Vitamin B-complex - B vitamins are important for overall health, and studies have shown that vitamin B6, in particular, may help reduce the risk of kidney stones.
  • Coenzyme Q10 - This antioxidant has been shown to have protective effects on the kidneys and may help reduce the risk of kidney damage.

Can Supplements Cause Kidney Stones?

Yes, certain supplements can contribute to the formation of kidney stones. For example, excessive intake of vitamin D or calcium supplements can lead to the formation of calcium-based kidney stones. It's important to talk to your healthcare provider before taking any new supplements, especially if you have a history of kidney stones.

Will Supplements Damage Kidneys?

Supplements can potentially cause kidney damage, particularly when taken in excessive amounts or for prolonged periods of time. However, with appropriate use and in conjunction with a healthy lifestyle, many supplements can actually support kidney health and function.

Which Supplements are Bad for Kidneys?

In addition to the supplements mentioned above, there are several other supplements that may be harmful to the kidneys, including:

  • Amino acid supplements - High doses of certain amino acids, such as arginine and cysteine, can be toxic to the kidneys.
  • Iron supplements - Excessive iron intake can lead to iron overload and kidney damage.
  • Chromium supplements - Chromium picolinate, a popular form of chromium supplement, has been associated with kidney damage in some studies.

In conclusion, while some supplements can support kidney health, others may be harmful or even toxic to the kidneys. It's important to talk to your healthcare provider before taking any new supplements, especially if you have a history of kidney problems. A healthy diet and lifestyle, in combination with appropriate use of supplements, can help support overall kidney health and function.



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