There appears to be a bug with the status system on some servers (possibly only private hives -- not verified).
- No status indicators (hungry/thirsty/healthy/stuffed etc.) are shown
- You can eat or drink as much as you want, you will never get stuffed or vomiting because of full stomach
- Apparently loosing blood does not make make your view grey
- You could possibly not regenerate blood by eating (not verified)
- You could possibly not starve (not verified)
There is already a discussion at Reddit on this matter https://www.reddit.com/r/dayz/comments/4oac8r/anyone_elses_status_indicators_not_showing/
Apparently there are servers which do not have this problem. Perhaps it is (again) a problem with private hives.