Theirs a lot of vitamins and supplements out there and one of the most important and recently popularized one is fish oil. Their are many benefits and it is an essential source of omega 3. One of the reasons to eat it is research has shown that it helps your brain stay healthy. A lot of research is backing up Alzheimer patients being studied with fish oil supplements ( specifically the omega 3 contained in the supplements) and how it might improve or prevent their condition. Other benefits are how it helps your heart and skin condition.
Some of the Fish oil side effects are that, like the fish they can originate from, contain pollutants. Make sure you use treated/refined oil that had all pollutants removed! This is actually an advantage that fish oil of good quality has over simply adding fish to your diet that can’t really be refined and have their pollutants extracted. Another minor side effect is that some people have a “fishy aftertaste” after taking their fish oil pills. Basically you might burp with a breath similar to if you just ate fish. Once again good quality fish oil supplements should not have this issue so if you do have it and it bothers you, try another brand.
Finally it can be hard to find the best source of oil. Some things to keep in mind is the % of DHA and EPA contained in the supplements. You want to aim with about 180mg of each. So if your capsules are 1000mg you want the % of both proteins to be above or equal to 18% ( 180mg). Also like I previously mentioned to avoid long term side effects make sure your supplements come from healthy fish or were treated. Some supplements are in liquid form and these are usually easier to have the correct DHA/EPA values but it does not necessarily make them better.
You can of course simply eat fish instead of taking fish oil supplements. It is recommended to eat at lest 2 to 3 fish meals a week to have all the necessary omega 3. Also, if you do not want to deal with fish at all, you might want to consider flax seed oil which is what many vegetarians use to get their “fix” of omega 3 while not having to resort to eating fish or any products from them. their are a few other herbs that contain omega 3 if you insist on not dealing with fish. I personally love the taste of fish but I can understand it’s not for everyone. Regardless, make sure you have a good source of omega 3!