I take metropolol, too. I am NOT overweight and don’t eat a lot of salt. My doctor said I have a sodium deficiency.
In my case, it appears to be genetic.
Also Vit D level needs a check, many are deficient in it due to our life styles or the need to avoid a lot of sun. They tell you 15 mins a day is all you need in the high sun periods of spring and summer, more for fall and winter when we have less Sunlight. With my very fair skin that is a sunburn. Skin cancer risk I don’t take.
Metropolol is what hubby takes + HCTZ for ankle swelling His is genetic too, just as the cholesterol is. Salt intake hidden in his snack crap he won’t give up. Since I have to watch salt intake for Meniere’s I can empathize to a degree. To much sets my ears to high pitch ringing, or will trigger an attack or Vertigo at the very least. Neither are pleasant. Altitude gets me too. My BP is Low, only time it is up is PAIN or you riled my Celtic temper to the boiling point.