Heart disease patients have long been advised to eat more fish or take fish oil supplements containing omega-3 fatty acids. The reason for this is people who do, tend to live longer.

Now, some say a study out in the Journal of the American Medical Association might explain why.
Exclusively, the researchers behind the study account that for heart disease patients, omega-3 fatty acids may protect against death and illness by slowing biological aging.

However, the findings were met with disbelief from some cardiac experts who said the study had serious limitations.

In the study, Dr. Ramin Farzaneh-Far of the University of California San Francisco and colleagues followed more than 600 men with heart disease and found those using the most omega-3 appeared "biologically younger" -- that is, the ends of their chromosomes, called telomeres, looked longer and healthier.

There are many more benefits of fish oil, like:

1) The fish oil is very helpful for the eyesight.
2) The fish oil is very effective to prevent all types of dejection including the schizophrenia, bipolar disorder, ADHD and anger caused depression.
3) The fish oil is found effective in treatment of rheumatoid arthritis, inflammatory bowel disease, systemic lupus and other inflammatory conditions.
4) The consumption of fish oil reduces the probabilities of all forms of cancer including breast, colon and prostate.
5) The fish oil has very importance in preventing the pregnancy complication like premature delivery and low birth weight.
6) It reduces craving caused by the fatty foods.