First of all I would like to compliment you for your drive for answers and welcome to the forum.
Now your soon to be’s problem! The name of his problem is called bradycardia which means his pulse rate drops to low to supply the amount of oxygen the body needs and then the lights go out.
Make no mistake this is a serious problem and needs to be addressed by a health care professional and I would say if his current provider is taking this lightly he really needs to find someone who will take it serious!
Let’s look at common causes in younger adults
1. Electrolyte imbalance
2. Thyroid problem
4. Coronary nerve problem
Down at the bottom of the list would be clogged arteries.
Since you said he dropped while standing in the heat that pointed me to number one automatically. A electrolyte replenisher such as Gatoraide would be a good starting place to see if this helps well he waits for a good doc to see him.
The next thing would be get his heart strength up.
Here we need Vitamin-C 8 to 10 grams over the day, CQ10 @ 200mg +, Hawthorne berry, magnesium and potassium
You need to stay away from known dilators such as Arginine, Taurine, melatonin
these will only add to this problem.
As far as medical the tests he needs asap are blood work, CBC, Met panel, Thyroid panel and electrolyte level.
Good luck! Remember he needs professional help now!!!
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