Does taking fish oil help control blood pressure?

Fish oil contains omega-3 fatty acids, long known for their cardiovascular benefits, particularly in lowering triglycerides. However, many people also wonder whether supplementing with fish oil actually helps lower blood pressure.

While many believe in the "miraculous" effects of fish oil on blood pressure, related studies have yielded inconsistent results. Some studies show that fish oil can help lower blood pressure, while others have not observed this effect. Therefore, it is important to recognize that this effect is limited to avoid overuse, according to Health (USA).

Fatty fish such as salmon, mackerel, and sardines are good sources of omega-3s.

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The effect is more pronounced in people who already have high blood pressure.

A 2022 analysis showed that supplementing with 2-3 grams of omega-3s daily resulted in a modest reduction in blood pressure, a effect particularly pronounced in individuals already suffering from hypertension. However, the additional benefits of fish oil supplementation in those already taking blood pressure medication remain unclear.

For people with normal blood pressure, taking fish oil supplements usually causes little or no change in blood pressure.

One reason for the differing results of studies is that there are many fish oil products on the market with varying ratios of DHA and EPA. Additionally, the studies used inconsistent dosages; some doses showed effectiveness, while others did not.

Although there is no conclusive evidence, some studies suggest that omega-3s in fish oil may help blood vessels relax and widen. This could theoretically reduce inflammation and improve blood vessel function.

Omega-3s are also believed to help reduce oxidative stress – a condition in which free radicals accumulate, causing cell damage and being linked to high blood pressure.

Risks and things to note when taking fish oil supplements.

Fish oil is generally quite safe, but it can still cause side effects. Mild side effects may include a fishy taste in the mouth and heartburn. More serious side effects, some studies have noted, include an increased risk of atrial fibrillation, increased LDL cholesterol, and increased risk of bleeding.

Doctors generally do not recommend fish oil capsules as a routine supplement unless specifically indicated. Instead, experts prefer obtaining omega-3s from natural food sources.

Fatty fish such as salmon, mackerel, albacore tuna, freshwater trout, and sardines are good sources of omega-3s. The American Heart Association (AHA) recommends eating two servings of fish (each serving about 100 grams) per week.

Before using fish oil, you should consult with your doctor or pharmacist to get advice on the benefits and risks based on your individual health condition.

Source: https://thanhnien.vn/uong-dau-ca-co-giup-kiem-soat-huyet-ap-khong-185260520151841493.htm