I'm not an expert, but medicine's are drugs, created to help people, in certain ways, such as Adderall helping with ADHD or Elderberry. But drugs that aren't medicine are like cocaine that might've been used for medicinal uses back in the day, but now is just used for personal use, such as weed, it can be considered medicinal but it's used more for pleasure than to help a illness
The importance of reading books is that it strengthens your brain and reading fluency and it makes your vocabulary and grammar better.
I know that Americans prefer white meat chicken compared to the dark meat, so I imagine the same can be said for Turkey.