What are some theories about Poe's death?

Summarize the theories:

https://www.smithsonianmag.com/history/still-mysterious-death-edgar-allan-poe-180952936/

https://www.ripleys.com/weird-news/poes-death-theories/

1. Murder - He was beaten and left for dead

(describe why this is a valid theory and what evidence backs it up)

2.  Cooping 

3. Rabies

4. Alcohol Abuse

5. Brain Tumor

6. Hypoglycemia

7. Syphilis

8. Influenza

9. Suicide

10. Cholera