This is also going up against the limits of modern knowledge. Depending on when this was written, we've only "recently" discovered that drugs that remove the similar plaques involved with Alzheimer's, doesn't necessarily help the patient. Google Donanemab, and the controversy about their approval in 2024. Patient groups and Alzheimer's groups clamored for it, the science behind it was pretty bad, so the actual Science people said it's not worth it as a drug. Patient groups won out, for an incredibly expensive drug that has horrid side effects and doesn't have many benefits. The other "new" drug, Lecanemab also is pretty ineffective overall. I'd guess the author may have known about some of the clinical studies, but not the results when this was originally written. So they may not want to jump the gun on unproven therapies. Even if you use magic.He can't do it with medicine, but couldn't he use his divine arts to eliminate the buildup?
Yeah this is exactly why you will never get a realistic isekai where the character has basically no power and only intelligence and it runs for any period of time, because ultimately that character is limited by the author's actual skill, and if the author were actual that smart to survive in an isekai world till the end, he probably would be doing something else. The mangaka isn't a doctor, no matter how much research he does, let alone a Nobel prize caliber doctor who would be required to come up with cures for diseases we can't cure in our current timeline. Ultimately the character are limited and given freedom by the author, and the more realistic the harder it is for the setting to work, that's why those who want something as low fantasy as grimgar but with some genius level protagonist but still make it plausible without asspull basically won't happen.This is also going up against the limits of modern knowledge. Depending on when this was written, we've only "recently" discovered that drugs that remove the similar plaques involved with Alzheimer's, doesn't necessarily help the patient. Google Donanemab, and the controversy about their approval in 2024. Patient groups and Alzheimer's groups clamored for it, the science behind it was pretty bad, so the actual Science people said it's not worth it as a drug. Patient groups won out, for an incredibly expensive drug that has horrid side effects and doesn't have many benefits. The other "new" drug, Lecanemab also is pretty ineffective overall. I'd guess the author may have known about some of the clinical studies, but not the results when this was originally written. So they may not want to jump the gun on unproven therapies. Even if you use magic.