I realize this is unpopular on this sub, but does no one believe in mental problems?

I understand the desire to find an ingestible or other fix for your problems. But does this sub in general simply not believe that some problems are purely mental? I see requests for supplements or procedures to help with (and this is just the first couple pages of the sub)

• motivation
• grief
• verbal fluency
• laziness (I suppose the flip side of motivation)
• OCD ADHD SAD. (These actually might be amenable to treatment, I don't know)
• mental speed, clarity, focus, intelligence, and working memory.
• anxiety
• memory
• comprehension
• general happiness

Now I agree that biological things can help other things in your life. But are we simply assuming that ALL problems can be solved via supplements, drugs, sleep, etc.? Are there not problems that simply need an internal mental adjustment? Certainly Buddhists believe so.

Could some possibly all of these be addressed through simple meditation and if I might borrow a term "self work"?

Edit: Thank you all. I was looking for conversation and debate and was not disappointed. I'm really just curious what the breakdown is on purely biological vs purely mind vs a mix. It seems that most have an opinion and there are several. My own view uses an overworked metaphor I'm not crazy about, but here goes. Body and mind are similar to a computer and software. If the system keeps hanging sure it could be disk errors but hardware is not the first place you look, you look for a problem with the software.