Health Supplements: Risks and Considerations for Smokers - Nutrition

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Questions about health supplements?


Hello, thank you for your previous response.
I would like to ask a few questions about health supplements.
I usually take B vitamins, probiotics, lutein, and fish oil, and my family also takes them.
However, I recently read that "taking lutein and vitamin A simultaneously poses risks for smokers." My father has quit smoking, but he smoked for several decades and has only been smoke-free for a year or two.
Could this be a concern? Additionally, are there any contraindications when using health supplements, such as interactions with high blood pressure or other medications? Thank you.

Ar, 20~29 year old female. Ask Date: 2011/08/04

Dr. Cai Xiuwen reply Nutrition


Hello, regarding lutein and vitamin A, the main concern is their competitive absorption, so it is not recommended to take both in high doses simultaneously.
Additionally, some early studies have linked vitamin A to lung cancer in smokers, but these studies involved high doses and "long-term" use.
More extensive research is needed to clarify this relationship.
Health supplements are still considered food; therefore, both excessive and insufficient intake are not advisable.
It is recommended to primarily focus on natural foods, using health supplements as an adjunct.
Long-term use of multiple health supplements together is not recommended, as it may burden the body.
Furthermore, if you are taking anticoagulants, it is not advisable to take fish oil concurrently, or you should consult a physician for evaluation before use.
Lastly, it is still recommended to choose natural foods and drink plenty of water, as this greatly benefits health.
Wishing you good health.
This response is provided by Dietitian Tsai Hsiu-Wen from Nantou Hospital, Department of Health.

Reply Date: 2011/08/04

More Info


Understanding the health risks associated with smoking and the use of dietary supplements is crucial, especially for individuals who have a history of smoking. Your concern about the potential interactions between certain supplements and the lingering effects of smoking is valid and important to address.

Firstly, it's essential to recognize that smoking introduces a myriad of harmful substances into the body, including carcinogens and toxins that can have long-lasting effects even after quitting. While your father has successfully quit smoking, the years of exposure to tobacco can still impact his health. The risk of developing smoking-related diseases, such as lung cancer, heart disease, and respiratory issues, remains elevated for years after cessation. This is due to the cumulative damage caused by smoking, which can lead to chronic health conditions.

Regarding the specific supplements you mentioned—B vitamins, probiotics, lutein, and fish oil—it's important to understand their roles and any potential interactions. B vitamins are essential for energy metabolism and overall health, and they can be beneficial for individuals recovering from the effects of smoking. Probiotics support gut health, which can be particularly important if smoking has affected digestive function. Fish oil, rich in omega-3 fatty acids, is known for its anti-inflammatory properties and can support cardiovascular health, which is crucial for former smokers.

However, the concern you raised about lutein and vitamin A is noteworthy. Lutein is primarily known for its role in eye health, while vitamin A is vital for immune function and vision. Some studies suggest that high doses of vitamin A may pose risks for smokers, particularly in relation to lung health. This is because excessive vitamin A can lead to toxicity and may exacerbate the risk of lung cancer in individuals with a history of smoking. Therefore, it is advisable for smokers or former smokers to be cautious with vitamin A supplementation and to consult with a healthcare provider before starting any new supplements.

In terms of dietary restrictions or contraindications, individuals with high blood pressure or other chronic conditions should also be cautious with certain supplements. For instance, some herbal supplements can interact with blood pressure medications, potentially leading to adverse effects. It's crucial to disclose all supplements and medications to a healthcare provider to ensure there are no harmful interactions.

Moreover, while dietary supplements can provide health benefits, they should not be viewed as a substitute for a balanced diet. Encouraging your father to consume a variety of fruits, vegetables, whole grains, lean proteins, and healthy fats can provide the necessary nutrients to support his recovery and overall health. Foods rich in antioxidants, such as berries, leafy greens, and nuts, can help combat oxidative stress caused by previous smoking.

Lastly, regular check-ups with a healthcare provider are essential for monitoring any lingering effects of smoking and managing overall health. This is particularly important for former smokers, as they may require additional screenings for lung function and other smoking-related health issues.

In conclusion, while your father has made a commendable decision to quit smoking, it is vital to approach the use of dietary supplements with caution. Consulting with a healthcare provider can help tailor a supplement regimen that supports his health without posing additional risks. Encouraging a healthy lifestyle, including a balanced diet and regular physical activity, will further aid in his recovery and overall well-being.

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