*Omega-3 fatty acids can interfere with the blood's ability to clot, thus increasing the risk of hemorrhagic strokes. By inhibiting clotting ability, it can also raise the risk for internal bleeding. Supplements should not be taken by anyone on anti-coagulant medication, anyone who has a bleeding disorder, or anyone with uncontrolled high blood pressure, a condition that already places them at greater risk for a stroke. Fish oils also should be discontinued two weeks before having surgery and one week after, to prevent complications from the blood's decreased ability to clot.
*Omega-3 acids are fats, and like all fats they contain large amounts of calories. Following some of the recommended dosage guidelines would add 200 calories a day to a person's diet. People taking supplements rich in omega-3 fatty acids may need to change their diet to ensure they don't include too much fat, which could also cause health problems.
* Avoid fish with high levels of mercury, such as wild swordfish, tilefish and shark.
==The benefits of Omega 3 fatty acids are==
*Omega-3 is not only good for the heart but also for the skin? But to put it plainly it does makes sense since the heart is the pumping center of the body, so if the heart is healthy, the other organs would simply be healthy as well. If the heart is pumping healthy blood surely, it provides healthy blood all throughout the body. It has been believed that Omega-3 prevents the drying of the skin and even helps solve your problem of [[eczema]] and [[psoriasis]]. Omega-3 are healthy fats that can be found in the foods that you eat such as fish (salmon, anchovies) and nuts (spinach and walnuts, preferably unsalted), aside from the supplements you can buy at the pharmacy. This will help keep your skin supple and prevent you from having wrinkles.