I think successful people in STEM fields have a high risk of assuming they're competent in other unrelated fields. People shouldn't take medical advice from people on the internet, even if they say they are a doctor.
Medicine is horrifically complex. Most vitamins also have an absorption limit, meaning megadoses simply go through your urine or stool. Look at me, doing exactly as I say not to do and trying to pass off medical information on the internet. The point of what I'm saying is to be careful believing things in these threads.
Medicine seems to be mostly concerned with more tangible problems. Good luck going to your doctor and complaining of poor cognition as your only symptom. I've done this before and SSRIs were the only thing offered.
I didn't take SSRIs. I used nutrition / exercise / stress management that I learned all on the internet and it worked.
I think the correct approach is to verify every single piece of information, like how you just pointed out your parent comments megadosing is misleading advice.
I also don't believe blindly trusting your doctor is a good idea either. There seems to be a huge framentation on nutritional science concenus for example. Sometimes it's really hard to know what to believe when it comes to our biologys.
Consider being careful with this. Too much of anything can cause damage, regardless of being fat or water soluble. Certainly avoid any advice any study that did not include at least a few million people from every nation in a controlled scientific method.