I like drinking iced coffee very much, but I feel a sense of panic every time I drink it. Is iced coffee harmful to my health?

In short, if you find yourself unwell after drinking coffee, you should stop drinking coffee for a while, and then start from a small amount and change your drinking style. American research shows that eating too much iced coffee is more likely to cause cancer.

Heart rate can lead to hypoxia in the heart. Panic, of course.