When researching your future retirement location, it's important to consider not just how much it costs to live there, but whether you feel safe, or are targeted by high taxes, or can find a doctor that you can afford. According to mobility specialist Stannah, 57 percent of senior citizens would consider moving to take advantage of cheap house prices, while 48 percent would move to a lower-tax state and 37 percent would chase a cheaper cost of living to a new home state. But what about the states that aren't friendly to seniors? Stannah's compiled all the data from a range of sources on 31 different criteria—everything from burglary and violent crime to the cost of health care and nursing homes, air and water quality, how far away are supermarkets and libraries and whether there's available public transportation—then crunched the numbers to come up with rankings for all 50 states. Here we take a look at the 10 states Stannah says are the least senior-friendly of the lot, and most importantly, why they rank at the bottom of the scale. READ MORE: Top 11 best states for retirement on a fixed income 7 best states in the East for retirement 5 worst, best states for pension funding