Natural doesn't mean safe

New Straits Times

23-07-2025

PRODUCTS which are deemed "all-natural" are generally trusted by consumers due to their perceived connection with nature and the absence of synthetic ingredients.
However, the "natural" label does not automatically equate to safety or efficacy and assuming that it does can lead to unintended consequences.
For instance, in Malaysia, traditional herbal medicine remains a common practice, where various communities rely on local herbs for their perceived health benefits. While herbal remedies can offer genuine benefits, they are not without risk.
Some natural ingredients may interact unpredictably with medications or cause adverse effects when consumed incorrectly.
According to a Health Ministry survey, 31.6 per cent of Malaysians were not aware of the possible interactions between traditional and modern medicines.
Herbalife director, research development and scientific affairs Asia Pacific, Dr Alex Teo, says licorice root, for example, is often used in traditional remedies and is known for its soothing properties.
However, excessive consumption, especially in concentrated supplement form, can lead to elevated blood pressure and imbalances in electrolytes. This underscores the importance of using even well-known natural ingredients with care and informed guidance.
To make well-informed supplementation decisions, consumers must have a good understanding of what the word "natural" represents and what it does not.
Dr Teo says one common misconception is that natural supplements are inherently safe because they aren't pharmaceutical drugs.
"In reality, toxins like arsenic and lead can be found in some plants and consuming them without proper knowledge of dosage can have serious health consequences on the kidney and liver."
Some people also mistakenly believe that if something is "natural", it can be taken in unlimited quantities without risk. However, even natural compounds can cause adverse reactions if overconsumed.
For instance, fat-soluble vitamins like A, D, E, and K can build up in the body and cause toxicity when taken for a prolonged period.
Another misconception is that supplements can be taken freely alongside prescription medications.
Some supplements, like concentrated green tea extract, can interfere with medications for heart conditions, while garlic supplements might interact with blood-thinning medications, reducing their effectiveness or causing harmful side effects, explains Dr Teo.
Hence, it is always important to consult a medical practitioner before starting supplementation alongside regular medication.
Most importantly, no supplement can replace a balanced, nutritious diet, stresses Dr Teo.
"Whole foods provide a complex combination of nutrients, fibre, and other compounds that supplements cannot replicate."
Consulting a healthcare practitioner is vital to ensure the right choices are made based on an individual's health profile and medication regimen, and to avoid any unintended negative consequences as a result of supplement ingredients interacting with ongoing medication.