Is massive heart attack rare at age 32?

Yes and no.

Blood is 94% water and water is the regulatory substance for every function in the body. Adults lose an average of 2 quarts of water per day through normal body functions. If this water isn't properly replaced it will lead to chronic dehydration.

Chronic dehydration affects all of the body's functions in some way and at some time - it may not be obvious, but functions that are dependent on water will not function properly in the absence of it.

Because heart problems are a cardiovascular issue, they too would result from chronic dehydration.

This doesn't mean that if you become dehydrated you'll develop heart issues. The body shows symptoms of dehydration in as many ways as there are functions that depend on water. Most of what the medical profession calls "disease" are symptoms of thirst. The word "disease" is used because it's more profitable - they can't make money promoting water or terms that point to water as a possible cure.

This is why they promote "fluids" and not water. Fluids may quench a person's thirst but they're not water and they don't function the same as water. You could drink all of the fluids you like and not feel thirsty - but you're still dehydrated, and the fluids act like diuretics to force water out of the body.

Stay properly hydrated and you'll have little to nothing to worry about.

Your fear of them is very much more likely to do you harm than any heart attack at your age. But as you get older its chance greatly increases, especially if you spend a lot of time in from of the TV and on the phone or sitting at a desk.

Smoking and high blood pressure would be the main issues that could lead to early age heart issues.

435,000 American women have heart attacks annually; 83,000 are under age 65; 35,000 are under 55. The average: 70.4. 42% of women who have heart attacks die within 1 year, compared to 24% of men. Under age 50, women's heart attacks are twice as likely as men's to be fatal. - https://www.womensheart.org/content/heartdisease/h...

rare BUT not unheard of .........................

Extremely rare at that age.