Shoes with a Slight Heel Help Support the Back:

MD Podiatrist
Wearing high heels is an obvious cause of lower back pain, but experts say that even “sensible shoes” may not support your feet properly. The trick is to find shoes that work with YOUR body, just as a prescription that works for one person may not benefit another.
Daniel Michaels, DPM, a doctor of podiatric medicine, recommends wearing shoes with a slight heel to support your back. Always buy shoes that are comfortable and not too tight or too loose, says Dr. Michaels.