Nature can help in may ways. The problem lies when many people do things that get their bodies so out of whack they need medicines to keep them alive. If their diet and lifestyle was changed, they can be weaned off many medicines, but many, like my own brother, didn't lose weight when he had diabetes. His heart got worse, where he needed medicine to keep the blood pressure low, but he still didn't listen and lose weight, so he had a heart attack. It's true that doctors probably kill more people every year with over prescribing than many other ways of death, but they are needed to prescribe medicines that are needed by those many who let themselves go. If people would start out young with a healthy lifestyle, they wouldn't need as many medicines as they use later in life. There are diseases in our world that can kill people, proven every day where healthy people die. People usually don't go from healthy to dead in a few days unless something is so powerful and fast acting happens. People get heart attacks from hurting themselves over time, usually a bad diet and or lack of movement. Covid killed many doctors and nurses in days, trying to save others afflicted. I had H Pylori 2 years ago and finally got it eradicated after going on the 2 antibiotics and antacid regimen, which messed my stomach up to this day. I'm doing everything to get it back to normal and it's taken a long time because of the medicines that killed that H Pylori. That's an ailment most people carry, but only a smaller percentage are affected by it. if not curtailed with medicine, which has shown to be the only way, it can lead to gastro cancer. No ways of stopping it by nature,as they've tried. Nature has some answers, and likely many more eventually, but there have been millions saved by vaccines, and millions that probably didn't need them, but better safe than sorry, especially with childhood maladies that can kill pretty quickly. If people don't take blood pressure medicine when they're hearts have taken a beating by an unhealthy lifestyle, they can die. Trying out natural remedies, which always work slower than medicines, can have the patient dying before they help, whereas medicines can get the blood pressure down and keep it there. It's then up to them if they want to change their lifestyle to a healthier one.