Claire Corlett

Fish Food, Fish Tanks, and More

5 Little-Known Side Effects of Too Much Fish Oil


– Fish oil is known for its
health-promoting properties. However, more fish oil is
not necessarily better. And too much fish oil can
actually do more harm than good. So in this video we’re
looking at five possible side effects of too much fish oil. (soft chimes) Number one, low blood pressure. Fish oil’s capacity to
lower blood pressure is well documented. An analysis of 31 studies concluded that taking fish oil can
effectively lower blood pressure, especially for those
with high blood pressure or high cholesterol levels. So while these effects can be beneficial for those with high blood pressure, it can actually be a problem for those who don’t have high blood pressure or already have low blood pressure. Fish oil may also interact with blood-pressure-lowering medications, so it’s important to speak to your doctor if you do take any medications for treating high blood pressure. Number two, acid reflux. Although fish oil is known for its powerful effects on heart health, it can cause heart burn, or acid reflux, in some people. Other acid reflux symptoms including belching, nausea, and stomach discomfort are common side effects of fish oil due to largely its high fat content. Now, fat has been shown
to trigger indigestion in several studies. So sticking to a moderate dose and taking supplements
with meals can often effectively reduce acid reflux
and relieve the symptoms. Number three, bleeding such as nosebleeds. One study showed that taking fish oil may be linked to a higher
risk of nosebleeds, reporting that 72% of adolescents taking one to five grams of fish oil daily experienced nosebleeds as a side effect. For this reason, it’s often advised to talk to your doctor before you take fish oil supplements if you’re on warfarin or something other
blood-thinning medication. Number four, vitamin A toxicity. Certain types of omega-3
fatty acid supplements are really high in vitamin
A and they can lead to toxicity if you consume
them in large quantities. For example, just one
tablespoon, or 14 grams, or cod liver oil can fulfill up to 270% of your daily vitamin
A needs in one serving. Vitamin A toxicity can cause side effects such as dizziness, nausea,
joint pain, skin irritation. Long term, it could also
lead to liver damage and even liver failure
in the most severe cases. For this reason, it’s important
you pay close attention, or at least are aware
of how much vitamin A is in your fish oil supplement, and follow the recommended dosage. Number five, diarrhea. So this is a side effect
that is associated with taking taking fish oil, particularly if you
take very large amounts. In fact, one review reported that diarrhea is one of the most common
adverse effects of fish oil, alongside other digestive
symptoms, such as flatulence. So if you experience diarrhea
after taking supplements, make sure you’re taking them with meals and consider decreasing your
dosage if symptoms persist. Look, ultimately, fish oil supplements appear really safe, as
long as you’re sensible and you’re following the directions and the dosages on the label. Of course, I have to
recommend that you get your omega-3 fatty acids and your fish oil from whole foods where possible
rather than supplements, as this is just gonna
maximize the nutritional gain. Thanks for watching. Make sure to give this video a thumbs up if you found it informative. Don’t forget to subscribe to Healthline’s Authority Nutrition YouTube channel by clicking the red subscribe
button below this video. (soft inspirational music)

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