A study just published in the Journal of the American Medical Association has concluded that ALA (the type of omega3 found in chia) can reduce the risk of fatal heart attacks. This study also supports the fact that the omega3 found in fish (DHA and EPA) can also reduce the effect of fatal heart attacks. The authors stated that the ALA marker was associated with a 9% reduced risk of a fatal heart attack, while the EPA and DHA marker was associated with a 10% reduced risk.
Clearly this refutes earlier studies that had said consuming ALA was ineffective in regards to reducing coronary heart issues.