Diet, exercise, good life decisions, age, luck, and genetics all play a huge role in your health. There are NO substitutes for these. Most people don’t live a truly healthy lifestyle and only think they do often based on information peddled though social media, mass media, and from personal and largely uneducated speculation. Doctors intervene when a problems arise and people need help. They are sought out by a person with a problem, not vice versa. Most physicians do the best they can because they truly want to help. Some are crappy at their job or selfish just like human being in every occupation. Doctors are not magicians, fast food workers preparing a to go order to customers satisfaction, or government cronies (Dr. Fauci and other Covid hucksters as notable exceptions).
If electrolytes and whole grains are sufficient to treat your heart attack, stroke, life threatening hemorrhage, sepsis, etc. then by all means stay away from the evil, stupid, and morally corrupt doctors of the world! When hunting, make sure to shoot the biggest magnums you can find at ranges beyond your capabilities and blame the gun manufacturing industry for your failures while you are at it.