Study: Nurses, Docs Rule Top 10 List For Coffee Drinkers

Here's the ranking of workers most dependent on coffee, published on WebMd:

1. Nurses

2. Physicians

3. Hotel workers

4. Designers/architects

5. Financial/Insurance sales representatives

6. Food preparers

7. Engineers

8. Teachers

9. Marketing/Public relations professionals

10. Scientists

11. Machine operators

12. Government workers

Researchers found workers in the Northeast were the most dependent on coffee, with 48% saying they were less productive without it compared with a low of 34% of workers in the Midwest that said the same.