That’s not true. For example, a lot of Benadryl will make you hallucinate, but that doesn’t mean a normal dose will make you hallucinate a small amount.
Getting horribly fall down drunk as a teenager caused me to shit my pants once. But I didn’t so much as fart when I got tipsy on vacation recently.
I would absolutely be willing to bet that a small dose of Benadryl won't make someone hallucinate "a small amount".
Put it another way if makes you feel better -- a little bit of D3 via direct sunlight and D3 rich foods will improve your mood and health outcomes in a variety of ways. An excessive amount of D3 will give you kidney stones and harm your bones.
This is mostly just scaremongering, but even if I had a noticeable drop in intelligence from taking medication over multiple years, gaining the ability to actually schedule appointments in a calendar, to do focused research on topics that I'm interested in, and to build productive habits like eating regularly, exercising daily, and daily practicing skills I wanted to improve at -- would more than offset the downside.
It's one thing to be worried about subtle effects from medication, but I already know what the long term health and brain effects are from constant insomnia and regularly forgetting to eat. Neither of those are good for brain function.
So yeah, seems like a pretty reasonable risk to take, particularly given the fact that I have a psychiatrist, therapist, and multiple friends and family monitoring me.
Let me flip the question back to you. Would you notice if D3 or iron or protein intake was subtly harming you over the course of multiple years? Is that something that terrifies you?
Getting horribly fall down drunk as a teenager caused me to shit my pants once. But I didn’t so much as fart when I got tipsy on vacation recently.