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Originally Posted by Sunshine797 I high blood pressure and also an irregular heart beat. I also suffer from asthma due to allergies so sometimes I'm congested and have a harder time breathing. |
Get the asthma and allergies under control - the best you can. This can affect heart rate and blood pressure. You may want to have other hormones, blood sugar, and vitamin/mineral levels checked out, too, as anything wrong with these areas can affect heart rate/rhythm.
I have problems with tachycardia, not high blood pressure, but I've chosen to give up even smaller rides. With my fear of heights it sends my heart rate up too much - when that happens I get too many neurological symptoms due to poor blood pressure (a fast heart rate is not efficient), so it takes any "thrill" out of rides.
Ultimately it's up to you as to whether you choose to continue riding them. As you pointed out you've been doing it for years with no issues.
As to why they don't want you on them. When you ride a roller coaster you get scared, this releases adrenaline and the adrenaline makes your heart rate increase. For some people this makes blood pressure go higher because adrenaline is also a vasoconstrictor.
The problems with G forces is different. This has to do with added gravity on the body. For some, their body can't maintain adequate blood flow (and pressure) to the brain. This can happen with tachycardia too since the heart isn't pumping blood as efficiently. Lack of blood to the brain causes neurological symptoms - such as white outs/grey outs, ringing ears, and fainting.