In the quest for optimal health, many of us turn to supplements as a way to fill in the gaps that our diets may leave. It’s a trend that seems healthy on the surface, but according to Nichole Andrews, a registered dietitian and nutritionist specialising in oncology, this habit could be doing more harm than good, particularly when it comes to cancer risk.
Andrews, who has garnered a significant following on social media as ‘The Oncology Dietitian’, has made it clear that she steers clear of vitamin and mineral supplements unless specifically recommended by her doctor. Her advice is grounded in the principle that nutrients should come from food, not pills. This approach is not only about getting the most natural and absorbable form of nutrients but also about avoiding the potential dangers of high-dose supplements.
The internet is abuzz with her message, especially after a social media clip where she advised against seeking out supplements to reduce cancer risk went viral, amassing over a million views. ‘I do not take any supplements unless my doctor recommends it, I get all my nutrients from food,’ Andrews stated in the video. ‘In fact, high doses of supplements can increase cancer risk.’
While Andrews didn’t specify which supplements and cancers in her brief clip, the concern is not unfounded. The NHS has issued warnings about certain supplements, such as beta-carotene, which can increase the risk of lung cancer in smokers and those exposed to asbestos. Beta-carotene, a pigment found in many yellow and orange fruits and vegetables, is converted by the body into vitamin A, essential for immune function, vision, and skin health. However, studies have shown that beta-carotene supplements can pose a risk, with smokers who took these supplements having a nearly 20% higher risk of developing cancer.
It’s not just beta-carotene that’s under scrutiny. Vitamin E supplements have been linked to a 17% increased risk of prostate cancer in men, despite the vitamin’s natural presence in nuts and seeds and its role in maintaining healthy skin, eyes, and immune function. Selenium supplements, when taken in high doses, have been associated with a significant increase in the risk of death from prostate cancer. Iron supplements, too, have been implicated in increased bowel cancer risk due to oxidative damage to cells.
The relationship between supplements and cancer risk is complex and continues to be a subject of extensive research. However, the prevailing advice from health experts is that a healthy, balanced diet should provide all the vitamins and minerals our bodies need. Despite this, surveys show that nearly half of the population takes supplements regularly in the hope of achieving better health.
For those concerned about potential deficiencies, the best course of action is to consult with a GP for advice and possible testing. Andrews also cautions against other daily habits that could increase cancer risk, such as consuming alcohol and processed meats. Alcohol is linked to several types of cancer, including breast, mouth, and bowel, and processed meats are known to be a cause of cancer due to substances like nitrites and nitrates.
Cancer Research UK estimates that nearly one in six of the 45,000 bowel cancers diagnosed in the UK each year are caused by eating processed meat. With approximately 385,000 Brits diagnosed with cancer annually and about half the population expected to face the disease at some point, the message is clear: think twice before overloading on supplements and be mindful of other lifestyle choices.
Have you ever had concerns about supplement use or its impact on your health? How do you ensure you’re getting the right nutrients in your diet? We’d love to hear your thoughts and experiences—join the conversation in the comments below as we explore safe and balanced nutrition practices together!
Also read: Understanding multivitamins: What they can and can’t do
