I have used Dr. Keller's Live Agelessly clinic for about 5 years. I had gone to several hormone replacement Docs in Houston and none were ever as thorough as Dr. Keller. She checks EVERYTHING in the bloodwork including vitamin deficiencies. When I started with her I was pushing a 40inch waist and she figured out I had very high estrogen. Within a year my waist was 36 without any changes to my diet or exercise routine. During one visit I mentioned to her I had been extremely gassy for years, to the extent I had seen a couple of Gastros about the problem (who had never solved it). She gave me a take home fecal test and found an unusual bacteria in my stomach and after one round of antibiotics I was cured. I was happy but furious I had spend years and lots of Dr visits seeing "specialist" and all I needed was an antibiotic. Last year, my PSA came back high and she referred me to a Urologist. However, she didn't just forget about it after that- she called the Urologist and made sure he was up to date on all my medical info and followed up with me by phone personally several times while I was seeing the Urologist. Luckily it was nothing, but you don't find many Docs with that kind of personal attention anymore.