Negative Effects of Fish Oil Supplements on Health

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Written By Prathamesh Sawant

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Health Benefits vs Risks

Fish oil supplements are often taken for their potential health benefits, but it’s important to also consider the potential risks. While fish oil has been shown to have several positive effects on health, such as reducing inflammation and improving heart health, there are also some potential risks to be aware of.

One of the main concerns with fish oil supplements is the potential for contamination with pollutants like mercury, dioxins, and polychlorinated biphenyls (PCBs). These contaminants can accumulate in fish and may be present in fish oil supplements. It’s important to choose a reputable brand that tests for purity and quality to minimize the risk of contamination.

fish oil supplements

Another potential risk of fish oil supplements is their effect on blood clotting. Fish oil has blood-thinning properties, which can be beneficial for some individuals, such as those at risk for heart disease. However, for others, particularly those taking blood-thinning medications or with bleeding disorders, fish oil supplements may increase the risk of bleeding or interfere with medication efficacy. It’s important to consult with a healthcare professional before starting fish oil supplementation, especially if you have any underlying health conditions or are taking medications.

Possible Side Effects of Fish Oil supplements

In addition to the potential risks mentioned earlier, fish oil supplements may also cause some side effects in certain individuals.

These side effects are generally mild and may include fishy aftertaste, bad breath, nausea, diarrhea, and indigestion. These symptoms can usually be minimized by taking fish oil supplements with meals or using enteric-coated capsules that dissolve in the intestines instead of the stomach.

Fish oil supplements may raise the risk of stroke

While fish oil supplements are generally considered safe for most people, there is some evidence suggesting that they may increase the risk of stroke in certain individuals. This risk appears to be higher for individuals who already have a history of stroke or who have risk factors for stroke, such as high blood pressure.

Recent study on the effect of fish oil supplements published by BMJ Journals, reveals corelation between fish oil supplements and cardiovascular diseases.

The study by BMJ Journals was conducted on 415 737 participants, aged 40-69 years. The study revealed that the participants with regular use of fish oil supplements in their diet had different roles in the health transitions. This impacted transition from healthy status –> atrial fibrillation –> major adverse cardiovascular events –> death.

Conclusions from the study suggested that regular use of fish oil supplements might be a risk factor for atrial fibrillation and stroke for the general public.

Interactions with Medications

Fish oil supplements can interact with certain medications, potentially affecting their effectiveness or increasing the risk of side effects. Some medications that may interact with fish oil include blood-thinning medications like warfarin, anti-inflammatory drugs like ibuprofen, and certain cholesterol-lowering medications.

If you are taking any medications, it’s important to speak with your healthcare provider before starting fish oil supplementation to ensure there are no potential interactions or adverse effects.

Dosage and Safety Recommendations

When it comes to fish oil supplementation, it’s important to follow recommended dosage guidelines to ensure safety and maximize the potential benefits. The appropriate dosage may vary depending on factors such as age, health status, and the specific condition being targeted.

In general, the American Heart Association recommends a daily intake of 1 gram of fish oil for individuals with heart disease. For general health maintenance, a lower dosage of around 250-500 milligrams per day may be sufficient.

However, it’s always best to consult with a healthcare professional to determine the appropriate dosage for your specific needs and to discuss any potential risks or interactions with medications.


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