Here are the numbers — Among patients found to have breast, colorectal, or prostate cancer:

• 40 percent reported dietary supplement use
• 19 percent believed dietary supplements could reduce cancer recurrence risk

Researchers recently reported these findings in the journal Cancer.

There appeared to be differences in supplement use by subgroups. Females appeared nearly 2.5-times more likely to take supplements. Perhaps not surprisingly, a belief in the importance of supplements to reduce cancer recurrence risk led to a 3.1-times higher chance of supplement use. Obese individuals were nearly half as likely to use dietary supplements.

What are the most common supplements? Thirteen percent reported fish oil use, while 9 percent used calcium (with or without vitamin D). Over eight percent consumed multivitamins and minerals. For those with breast cancer, 15 percent used calcium (with or without vitamin D).

Do supplements improve cancer outcomes?

Study author Rana E. Conway, BSc (Hons), Ph.D., RNutr, research fellow in the obesity group at the research department of behavioral science and health at University College London, offers this:

“There is no evidence that self-prescribed supplements reduce the risks of cancer coming back, and they could interfere with treatment.”

There is good evidence that a healthy diet and physical activity are beneficial; supplements appear to be an easier option, but we don’t have evidence that they prevent cancer from coming back.

On the other hand, mixing supplements with chemotherapy comes with peril. While common, such supplement use can lead to serious potential medication interactions. A 2021 study demonstrates this problem.

Prescription medications are most often associated with drug interactions, followed by herb and supplement-related interactions. Over one-third of potential medication interactions are considered significant.

Moreover, supplements may lead to poorer outcomes for those receiving chemotherapy for cancer. In a study of patients with breast cancer, patients who took vitamin B12 before and during chemotherapy had poorer disease-free and overall survival odds.

Iron consumption before and during chemotherapy appeared associated with a higher probability of a return of cancer. On the other hand, multivitamin use did not seem linked to changes in survival.

Certain antioxidants may help you fight cancer (or provide protection for your normal cells). However, we know that some supplements may make cancer treatment less successful. If you have cancer management, please ensure that your care team knows about any supplements you are taking.

Do supplements improve life length?

Moving beyond the realm of cancer, do supplements improve mortality? Do we live longer if we add this form of nutrients into our diets? While adequate intake of specific nutrients derived from food appears associated with lower all-cause mortality, nutrients derived from supplements are not helpful.

When Fang Fang Zhang, MD, Ph.D. (of Tufts University) evaluated data from the 1999 to 2010 National Health and Nutrition Examination Survey (NHANES) and National Death Index to determine how dietary supplement use and levels of nutrient intake from foods affect all-cause, cardiovascular disease, and cancer mortality among adults in the U.S. aged 20 years or older, she discovered:

• There appeared to be no association between the ever-use of dietary supplements and mortality outcomes.
• Participants with adequate vitamin A, vitamin K, magnesium, zinc, and copper via foods, not supplements, had lower all-cause and cardiovascular disease mortality rates.

Dr. Zhang offers this: “The general U.S. population should aim for achieving adequate nutrition through a healthy and balanced diet rather than counting on dietary supplements.

She adds: “For certain subgroups such as individuals with medical conditions that lead to malabsorption of nutrients from foods or those who have specific dietary practices that could cause nutritional deficiency, their nutritional needs including the use of dietary supplements shall be evaluated separately.”

These findings remind us that we health care professionals should review the use of dietary supplements with our patients. Thank you for joining me today.

The post Got Cancer? Supplements May Be Dangerous appeared first on Medika Life.

I want to share with you some of my concerns. There appears to be a dose-related risk for a heart condition (atrial fibrillation, a condition characterized by an irregular and often rapid heartbeat) with omega-3 fatty acid intake, at least with high doses of the supplement.

There have been three historic (and one recent) randomized clinical trials that support the supplement and atrial fibrillation connection. The VITAL-RHYTHM study is the latest clinical trial to evaluate the association. Led by Christine M. Albert, MD, MPH of Cedars-Sinai Medical Center (Los Angeles), the research team discovered no effect of omega-3 fatty acid supplements on the risk of atrial fibrillation.

The researchers also believe the VITAL-RHYTHM study is the only randomized trial to assess the effect of vitamin D3 supplementation on atrial fibrillation risk. They found no connection of vitamin D with Afib.

Researchers recently published these findings online. As noted, the current study points to no omega-3 fatty acid/atrial fibrillation connection. Still, taken in concert with the other three randomized clinical trials, we get hints that there may be a dose-related effect of omega-3 fatty acids on atrial fibrillation risk.

In the previous STRENGTH and REDUCE-IT trials, both of which evaluated high doses (4 grams per day) of omega-3 fatty acids in patients with heart disease (or at high risk for it), there appeared to be an increase in risk for atrial fibrillation in the omega-3 groups (versus control) in both trials.

The takeaway message? If you choose to take omega-3 fatty acids in high doses, you may increase your risk of common and potentially hazardous heart rhythm abnormalities. Vitamin D3 at 2,000 IU appears not to increase risk.

Thank you for joining me today. As for me, I am off for a walk to use a truly safe way to decrease my risk of heart disease.

The post What You Need to Know About Omega-3 Fatty Acids appeared first on Medika Life.