Binge eating on sugar causing excessive sweating and heart to beat fast

When I was a little younger in college (age 22 or so), I would binge on sugar fairly often. After a day of doing this, that night I would typically wake up with my heart racing and I would be very hot and sweating. At that time I was a little overweight (5'7" and 160), but I've since lost about 30 pounds. My question is whether I've caused damage to my heart?

[Roger Gould, M.D.]

no

[Jaquta]

Maybe your symptoms were also due to anxiety.  Something you were trying to mask with the emotional eating.

I often feel quite neurotic about my physical health but I have seen a number of programs on super morbidly obese people and I feel somewhat reassured that it takes a fair bit of neglect and abuse to cause significant damage and that most damage can be reversed with good nutrition and a healthy lifestyle.

Whether you have or haven't caused damaged (and the doctor says you haven't) you can't undo the past.  You can only work with what you have right now.

I hope that helps a little.  If you still have concerns you may like to discuss them with your doctor.