Sachdeva says nutrient deficiency is one legitimate reason to use supplements: “When a physician prescribes supplements, laboratory results usually guide this [decision], and the recommendation mostly involves topping up levels of certain vitamins. … A physician might prescribe vitamin D for people with low vitamin D levels, or some people might need iron or other essential vitamins if levels are low.”
If you have CKD, you may be deficient in certain B vitamins, including B1, B7, B9, and B12. Other common deficiencies include vitamin C and vitamin D. If you have advanced or late-stage CKD, your body may not absorb and use vitamin D as it should. In such cases, your doctor may prescribe a special pill or an injection of activated vitamin D that you receive alongside dialysis.
Similarly, the American Diabetes Association doesn’t recommend taking any kind of supplement with type 2 diabetes unless you have a medically confirmed nutrient deficiency. Even so, it’s crucial you consult a doctor to find a safe supplement that addresses your specific deficiency. Nutrient deficiencies in people with type 2 diabetes often include iron, magnesium, vitamin B12, and vitamin D.
Ultimately, the best way to ensure you’re getting the amount of essential nutrients you need is through diet, and discussing these needs with a registered dietitian-nutritionist can help you enjoy a renal-safe diet that best supports your kidney health. “However, diet alone might not be enough to restore levels of certain vitamins in some people with deficiencies,” says Sachdeva.
Some kidney-safe pill and liquid supplements are available, though even these should only be used if specifically recommended by your doctor, and they may require a prescription.
A healthcare professional can check your levels of various vitamins and minerals and tailor treatment to the way CKD presents for you. Only use the vitamins and at doses your doctor recommends, and don’t stop taking any vitamin without first consulting a medical professional.
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