India, Dec. 19 -- It has long been observed that heart attacks at night tend to be less damaging than those occurring in daytime. Studies in the past have suggested that neutrophils, the immune cells that act as the first responders to injury, may be responsible for this difference.

It was estimated that these cells, due to being more aggressive during the daytime, cause more inflammation and collateral damage to tissue in this period. A study published in the Journal of Experimental Medicine on December 12 looked more closely at this phenomenon.

Live Science reported that this study looked at the records of more than 2,000 people who suffered a heart attack. It concluded that those who went through this ordeal during the day showed a g...