Yeah, pretty much this. Look up old home remedies. Most "modern medicine" has its roots in them. Stale/moldy bread = antibiotics. Charcoal tabs, good for digestion and stomach aches (not taken all of the time). Fermented foods have a lot of benefits. All of those herbal teas for sleep, calmness, digestion, etc.. Yeah, they actually work (for most people) but don't over-do it. Some of those remedies are bullshit and have been proven so over time. Many have become the basis of modern products that have a whole shit load of other crap in them to make them shelf stable and profitable. You don't always need some brand thing to help you. Sometimes its as easy as putting some flowers in hot water for a few minutes.