There seems to be a confusion between “prevention” and “diagnosis.” Diagnosis would, one assumes, lead to treatment, which is more expensive than not diagnosing and not treating illness.
We’re senior citizens at our house. We haven’t been to a doctor in years. We take no drugs. If Vit C, ACV, castor oil (to rub on, not drink), baking soda and peroxide can’t fix it, you’re in big trouble. We’re all gonna die someday.