Yes. You can look up scientific papers linking balding with health issues. We know premenopausal women have much lower incidence of heart problems than men. Some ethnicities of men like east asians also have better heart health and incidentally have better hair than caucasian men.

Correlation does not mean causation. I'd actually be very surprised if fixing the hair addressed any correlated heart disease. The hair would be a downstream symptom, almost certainly.

I'm a doctor, if that makes a difference.

It has been shown that finasteride, which is a systemic drug actually helps [1] with heart health.

It's not that fixing hair would improve heart health, but that on a systemic level improving heart health could prevent balding.

  [1] https://pubmed.ncbi.nlm.nih.gov/25632043/

The experiment you linked was on mice.

Anyway, that's the opposite of what you said before. Treating heart to improve balding is not the same as treating balding to improve heart.

And finasteride is not a cure for balding. At best it slows it, with variable results among different people.