Fatigue is another symptom of a heart attack that is far from conclusive, as many different conditions and events can cause it, including something as simple as eating too little. Though it is important not to cause oneself needless stress by immediately assuming the worst, it is just as vital not to disregard symptoms that could point to a serious problem. Fatigue related to a heart attack usually presents as unexpected and unusual sluggishness or exhaustion, and it may accompany shortness of breath. These two symptoms together often indicate a larger issue.

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