Please don't give medical advice on the internet, especially without specifying what the advice is for, or without knowing what condition the other person has. It's obviously well intentioned, but incredibly reckless.
In short: Real life shouldn't have to be a ball-pit surrounded by rubber tiles. We're all adults here.
It’s a common Japanese food and he just said give it a go.
If the last two years should have taught us anything, it's that even otherwise intelligent people will interpret perfectly reasonable, specific and precise health advice in the worst possible way.
Most folks don't become an evangelist! The rest, though - yeah, it happens. People get sold sham cures and diets all the time and dismiss proven treatments. Even when folks do not dismiss modern medicine and are doing things that aren't actively harmful, alternatives tend to delay proven treatments.
Additionally, if you cannot afford medical treatment and you are presented with some "cure" that seems be a small fraction of the cost, it gets easier to justify whatever sham cure the person is trying to push.
'just try it out' comes with responsibility when you are talking medicine as it can snowball into something else.
There are so many symptoms that could either be something harmless (that can be fixed with a diverse non specific diet) or be cancer. If you spend too much time on medical websites trying to self diagnose you are at some point going to convince yourself that you have the worst disease of all the potential options.
At one point I was in ER (second time) gasping for air coughing up blood. Totally chill from all the anxiety meds while Doctor was explaining how it was just muscle strain. He went white when x/ray came back.