From $100,000-a-year testosterone therapy programmes to the rise of supplements like NAD+, hormonal health has become the new frontier in wellness and beauty. And it’s quickly being adopted by the ultra-rich, including biohacker Bryan Johnson, who invests $2 million annually in his quest for longevity. His routine includes a team of doctors that monitor everything from the length of his telomeres (DNA “caps” that prevent chromosomes from fraying) to his organ function and inflammation levels. His regimen includes over 100 daily supplements and human growth hormones.

For this elite group, beauty isn’t skin deep — it’s a cellular transformation, targeting glands, organs and the very essence of vitality itself. Take stem cell therapy, an exclusive (and expensive) treatment that involves extracting stem cells from bone marrow or donated umbilical cords and injecting it into targeted areas, such as joints or organs, to promote repair and improve hormone functions. Not currently approved in the US or the UK, wealthy individuals reportedly travel to luxury medical centres in destinations like the Bahamas, Jamaica or Panama, where these tailored treatments range from $20,000 to $150,000 per session. Monty Python actor John Cleese is a fan, having revealed in a recent interview that he spends £17,000 every 12 to 18 months on stem cell therapy provided by a private clinic in Switzerland.