The Side Effects of Consuming Too Much Fish Oil- HealthifyMe

Fish oil is often extracted from fish tissues reminiscent of capelin, sand eel, anchovy, horse mackerel, cod liver, pilchard, and menhaden. It might also come from different oily fishes like sardines, herrings, salmon, trout, tuna, and swordfish. These fish comprise omega-3 fatty acids like eicosapentaenoic acid and docosahexaenoic acids. 

The human physique can not synthesise them, so we should complement our physique with these important vitamins. Your physique requires these vitamins in varied organic processes reminiscent of signalling, cell membrane fluidity, and structural upkeep.

They additionally regulate the nervous system, blood strain, clotting, glucose tolerance, and inflammatory processes, which can be useful in all inflammatory situations. They have additionally been used to deal with dyslipidemia.

Benefits of Consuming Fish Oil

Omega 3 Fatty Acids as Cardioprotective Agents

Myocardial infarction usually happens as a result of formation of atherosclerotic plaques primarily made up of fat and ldl cholesterol. This plaque sometimes attracts platelets, resulting in blockage of blood vessels, referred to as myocardial infarction or, extra generally identified, a coronary heart assault.

Research exhibits that fish oils stabilise these plaques by stopping platelet aggregation. It minimises the danger of myocardial infarction and acts as a cardioprotective agent. Data additionally signifies that fish oil supplementation usually results in a greater endothelial response in coronary heart transplant sufferers.

There is substantial proof that omega-3 fatty acids decrease blood strain. The dose of omega-3 fatty acids wanted to scale back blood strain is prone to be at the very least 3-4 g/day.

Omega 3 Fatty Acids as Anti-inflammatory Agents

According to analysis, omega-3 polyunsaturated fatty acids (PUFA) possess probably the most potent immunomodulatory actions. Among the omega-3 PUFA, these from fish oil-eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA)-are extra biologically potent than alpha-linolenic acid (ALA).

It helps deal with autoimmune situations. Newer analysis about omega-3 fatty acids signifies their position in lowering exercise-induced irritation and bettering muscle well being.

Omega 3 Fatty Acids as Preventive Agents of Dementia

DHA is the first element of membrane PLs within the mind, particularly within the cerebral cortex, mitochondria, synaptosomes, and synaptic vesicles. They can forestall many neurological illnesses.

Several epidemiological research have proven that decrease intakes of omega-3 PUFAs are related to an elevated danger of cognitive decline or dementia, particularly for Alzheimer’s.

Prevents Depression

Multiple research have proven that fish consumption is related to a decrease danger of despair.

A examine discovered that supplementation with ω-3 PUFAs (a mix of EPA + DHA) positively affected pregnant schizophrenic ladies. EPA can act as an antidepressant agent that causes structural mind adjustments which positively affect despair.

Periodontal Disease

Periodontitis is an an infection of the gums. Certain micro organism allowed to build up in your tooth and gums trigger the situation.

As periodontitis progresses, your bones and tooth could get broken. According to analysis, dietary supplementation with fish oil may very well be a cheap option to deal with periodontal illness.

Diabetic Retinopathy

Diabetic retinopathy, a neuro-microvascular complication related to diabetes mellitus, is a sight-threatening situation that causes hyperglycaemia.

According to analysis, omega-3 fatty acids can doubtlessly inhibit the demise of retinal cells and the formation of faulty blood vessels. They can be utilized as prophylactic medicines and assist safeguard diabetic sufferers from this sight-threatening complication.


Psoriasis is a secure, noncontagious autoimmune illness characterised by raised areas of irregular pores and skin. These areas are pink or purple on some folks with darker pores and skin, dry, itchy, and scaly. Research signifies that cod fish oil has useful results on psoriasis. 

The HealthifyMe Note

Fish oil is wealthy in omega-3 polyunsaturated fatty acids. These fatty acids are identified to affect bodily features and physique metabolism considerably. They regulate the nervous system, blood strain, blood clotting, and different inflammatory processes. They are usually used as dietary dietary supplements and may lower unhealthy levels of cholesterol. 

What Are The Side Effects of Consuming Fish Oil?

The FDA-approved use of omega-3 fatty acids for adults (≥18 years of age) is a day by day dose of 1-gram capsules twice day by day with meals. The FDA recommends day by day consumption not exceeding 3 g/day of EPA and DHA mixed.

Consuming greater than 3 grams of fish oil or omega-3 fatty acids could result in an elevated danger of atrial fibrillation, elevated probability of bleeding, gastrointestinal issues, and lowered immunity.

Increased Risk of Atrial Fibrillation

According to analysis, supplementation with fish oil will increase the danger of atrial fibrillation in sufferers with elevated unhealthy levels of cholesterol. Therefore, you could contemplate the danger of atrial fibrillation when utilizing these dietary supplements. 

Increased Chance of Bleeding

As we all know, fish oil reduces platelet aggregation. It could also be useful when given in decrease doses. However, when given in increased doses, it impairs the platelet motion and causes bleeding, in line with analysis.

It warrants correct utilization of fish oil in advisable doses. Discussing the complement utilization and advisable dosage along with your physician can be prudent. Be certain to tell fish oil utilization earlier than any surgical procedure.

Gastrointestinal issues

According to analysis, fish oil may cause diarrhoea and higher gastrointestinal tract signs. There can be an opportunity of fishy style, burping, dyspepsia, and nausea.

You should go to a physician within the occasion of these issues. These are widespread unwanted side effects of fish oil on account of its high-fat content material, which can result in points with indigestion.

Vitamin A Toxicity

Certain omega-3 fatty acid dietary supplements, reminiscent of cod liver oil, are excessive in vitamin A, which could be poisonous in giant quantities. Data signifies that Vitamin A toxicity may cause unwanted side effects reminiscent of dizziness, nausea, joint ache, and pores and skin irritation. It might even result in liver harm and liver failure in extreme circumstances if the situation is left untreated for a very long time. 


According to analysis, consuming excessive ranges of fish oil could result in disturbed sleep. If your sleep high quality is low, it might result in varied unwanted side effects as sleep is one of crucial organic processes.

Decreased Immune Levels

Research has confirmed that omega-3 fatty acids are nice anti-inflammatory brokers. They act on varied immune cells and suppress their results. It has been made use of in numerous autoimmune situations.

However, when people take excessive doses of omega-3 fatty acids for extended intervals, they may have decreased immune response, making them extremely prone to numerous infections.

Increased Risk of Stroke

Hemorrhagic stroke is a situation characterised by bleeding within the mind, normally attributable to the rupture of weakened blood vessels. Some research have discovered {that a} excessive consumption of omega-3 fatty acids might lower the blood’s skill to clot and enhance the danger of hemorrhagic stroke.

Increased Risk Of Diabetes

Some controversies exist regarding the position of ω-3 PUFAs within the management of diabetes. A examine reported an elevated danger of sort 2 diabetes with the next consumption of omega-3 PUFAs. However, different research have proven omega-3 PUFAs or fish oil supplementation advantages towards sort 2 diabetes. It is a controversial matter and wishes additional analysis for higher understanding. 

Heavy Metal Poisoning

Fish oil shoppers ought to be conscious of the potential presence of heavy metals and fat-soluble pollution like PCBs and dioxins, that are identified to build up up the meals chain.

The HealthifyMe Note

Fish oil is a wealthy supply of omega-3 fatty acids, and lots of normally eat the merchandise as a complement. But like something, together with helpful issues, omega-3 fatty acids and their dietary supplements have sure disadvantages. Most of the unwanted side effects attributable to too many omega-3 fatty acids are delicate. These results embody abdomen ache, joint ache, nausea, vomiting, constipation, diarrhoea, extreme burping, heartburn, and many others. However, elevated unwanted side effects of omega-3 fatty acids can result in prostate most cancers. As a consequence, omega-3 fatty acid dietary supplements and fish oil should get consumed carefully. 

When to Avoid Fish Oil?

Caution and periodic monitoring are necessary in sufferers who eat antiplatelet and anticoagulant remedy as a result of skill of omega-3 fatty acids to scale back platelet exercise.

Additionally, in line with analysis, omega-3 fatty acids will not be thought-about allergenic, however the FDA labels state to make use of with warning in sufferers allergic to seafood. The omega-3 fatty acid merchandise additionally don’t profit hypertensive people.

The FDA-approved fatty acid prescriptions (icosapent ethyl, omega-3-acid ethyl esters,omega-3-carboxylic acids, and omega-3-acid ethyl esters A) are all being pregnant class C medication, and it’s unknown if the drug may cause deadly hurt or can have an effect on reproductive capability.


Healthy issues consumed at increased ranges may also result in unhealthy outcomes. As the saying goes, an excessive amount of of something isn’t good. Fish oil is an excellent complement.

It is wealthy in important minerals and nutritional vitamins. It has quite a few well being advantages. However, consuming them in increased portions could result in decreased immunity, elevated bleeding, a excessive danger of atrial fibrillation, hypercholesterolemia, and gastrointestinal issues, to call just a few. Hence, seek the advice of a physician or a well being knowledgeable and perceive the advisable dosage earlier than beginning your dietary supplements.

Frequently Asked Questions (FAQs)

Q. How a lot fish oil do you have to take a day?

A. The FDA-approved use of omega-3 fatty acids for adults (≥18 years of age) is run as capsules with a day by day dose of 2g/day taken as two, 1-gram capsules twice a day with meals. The FDA recommends day by day consumption not exceeding 3g/day of EPA and DHA mixed.

Q. What are the unwanted side effects of taking fish oil capsules?

A. Consuming greater than 3g/day of fish oil could result in toxicity and adversarial results with signs starting from fishy style, diarrhoea, nausea, arthralgia, decreased immunity, and elevated danger of bleeding. Therefore, it’s best to eat it within the advisable quantity. 

Q. Is 1000 mg of fish oil a day an excessive amount of?

A. No, 1 gram or 1000mg of fish oil is the advisable dosage, and it’s not an excessive amount of. More than 3g/day is poisonous and will result in varied unwanted side effects, together with fishy style, burping, arthralgia, decreased immunity, elevated danger of bleeding, and atrial fibrillation.

Q. What occurs in the event you take fish oil daily?

A. In advisable dosages, fish oil decreases your unhealthy ldl cholesterol, will increase your good ldl cholesterol, and acts as a cardioprotective agent. It can be helpful in coping with irritation and could also be useful in treating despair. It has additionally proven optimistic results on blood sugar and blood strain ranges.

Q. Who mustn’t take fish oil?

A. People with the next danger of atrial fibrillation, folks with bleeding issues, and individuals who have to endure advanced surgical procedures shouldn’t be taking fish oil. Taking fish oil earlier than surgical procedures could result in bleeding issues throughout the process, main to numerous problems. Hence it’s advisable to speak to your physician and point out the utilization of fish oil earlier than surgical procedure.

Q. What occurs once you take omega-3 daily?

A. Omega 3 fatty acids are extremely wholesome and may result in higher well being outcomes in people with heart problems, hypertriglyceridemia, sort 2 diabetes, most cancers, Alzheimer’s illness, despair, and neurological illness. It may also make your tooth stronger and your gums more healthy.

Q. What medicines shouldn’t be taken with fish oil?

A. Anticoagulant and antiplatelet medication, herbs, and dietary supplements. These medicines cut back blood clotting, which is harmful as fish oil already reduces the clotting skill. Blood strain medication, contraceptive medication, and Vitamin E dietary supplements shouldn’t be taken with fish oil as they result in problems.

Q. Does fish oil change your poop?

A. Fish oil consumption could result in undesirable results on the gastrointestinal system and will result in diarrhoea. It might also trigger belching, nausea, and a fishy style.

Q. Does fish oil increase ldl cholesterol?

A. Fish oil raises good levels of cholesterol whereas reducing unhealthy levels of cholesterol. Good ldl cholesterol or high-density Cholesterol is sweet on your coronary heart, so fish oil acts as a cardioprotective agent.

Q. Can I take nutritional vitamins and fish oil on the identical time?

A. No, taking nutritional vitamins with fish oil isn’t advisable concurrently. More particularly, the consumption of these vitamin dietary supplements ought to be averted as fish oil already accommodates excessive ranges of vitamin A and the consumption of extra could result in toxicity and trigger hypervitaminosis A.

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