For Alzheimer, if you don't die from any other condition, you will likely live longer and therefore the neurodegenerative illnesses will be more prominent, it seems very logical actually.
Just guessing; maybe age distribution, income distribution, and climate?
Here's a table showing age distribution by state. This doesn't explain everything, but WV does have the highest percentage (16%) of 65-and-overs. That might explain their poor showing, but LA and MS are unremarkable there: http://www.census.gov/compendia/statab/2012/tables/12s0016.p...
Its either going to be above or below average in every category, whether they are related or not. With enough categories, its going to be similarly situated across several of them no in any case.
Is it suspicious that Texas sits right in the middle in most categories?
Well, its the second best overall, but "almost every single category"? 1. Heart, it is on the low side but near the middle of the pack;
2. Cancer, it is one of the best;
3. Respiratory, it is on the low side but not very low;
4. Stroke it is near the middle of the pack;
5. Accident it is fairly low;
6. Alzheimer's its is significantly worse than average;
7. Diabetes it is near the middle of the pack;
8. Nephritis it is quite low;
9. Influenza it is a bit worse than average, but near the middle;
10. Drug it is slightly better than average;
11. Suicide it is a little better than average;
12. Motor vehicle it is quite low but far from the best;
13. Firearms it is quite low but far from the best;
14. Alcohol it is notably worse than average;
15. Parkinson's it is a little better than average;
16. Homicide it is a hair better than average;
17. HIV it is better than average but far from the best.
No, I don't think that counts as "suspiciously low in almost every single category".