Heartburn can appear among healthy people as well, and it is caused by consuming too much spicy food. If this becomes normal, and you experience acid reflux 2-3 times a week, then you will need to see a doctor, as this may be the cause and risk of cancer, which can be fatal.
http://guideforhealthytips.com/beware-if-you-have-such-heartburn-you-may-have-a-risk-of-getting-cancer/
BEWARE !! If you have such heartburn, you may have a risk of getting cancer!