Before You Take That Supplement—Here’s What Cancer Research Says

When it comes to cancer prevention and treatment, many people wonder if taking nutritional supplements can help. While vitamins, minerals and herbal remedies may seem like a natural way to boost your health, research suggests that whole foods—not supplements—play the biggest role in cancer prevention.

Can Supplements Help Prevent Cancer?

Currently, there isn’t enough evidence to say that supplements can help prevent cancer or reduce the risk of recurrence in cancer survivors. The American Institute for Cancer Research recommends eating a well-balanced diet rich in fruits and vegetables rather than relying on dietary supplements. Whole foods offer a natural blend of vitamins, minerals, and antioxidants to support overall health and lower cancer risk. 

Supplements During Cancer Treatment

For those undergoing cancer treatment, maintaining a well-balanced diet can be a challenge. In some cases, supplements may be beneficial but using them thoughtfully and under medical guidance is crucial. Here’s what you should know:

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• Multivitamins and minerals may help cancer patients at risk of malnutrition.
• Antioxidants could interact with cancer treatments, so always consult with your provider before taking them.
• Vitamin D and calcium are often recommended for those on hormonal treatments for breast or prostate cancer, as these therapies can weaken bones.
• Probiotics may help manage cancer treatment or antibiotic-related diarrhea.
• Herbal supplements can increase the risk of bleeding, especially before surgery. If you're scheduled for a procedure, talk to your doctor about any supplements you take.

Are Supplements Safe?

Unlike medications, dietary supplements don’t need approval by the Food and Drug Administration (FDA) to be sold, which means some may be unsafe or have misleading claims. To reduce risks, choose products with the USP Verified Mark. This mark ensures the supplement contains what's listed on the label, is free from harmful levels of contaminants, and meets strict quality and safety standards set by the United States Pharmacopeia (USP).

The Truth About Herbal and Natural Remedies

Many traditional or folk remedies have been used for generations, but not all are backed by science. Some were the best options available at the time but have since been replaced by more effective treatments. Always check with your healthcare provider before adding herbal or natural supplements to your routine.

The Bottom Line

When it comes to cancer prevention and treatment, whole foods are your best source of nutrients. If you're considering supplements, remember that your healthcare team is there to help you make the best decisions for your health.

Getting the right treatment and support can make all the difference in your cancer journey. At Overlake Cancer Center, we’re committed to providing exceptional care along with the compassionate support you need to navigate every challenge. Our expert team includes specialized nutritionists who can help you manage the effects of medication or other treatments with healthy food options. Call us today at 425.635.3400 with any questions you may have or to make an appointment.