Has there been some research or health journalism or something that is making cortisol the new buzzword? Or is it just that since the injections have become widely available there is less demand for magic weight loss solutions? Because a lot of them look like they used to be 'chair yoga for weigh loss' and are now 'chair yoga for cortisol reduction' (insert your own bonkers exercise regime).
How does anyone know what their cortisol levels are anyway? Is there a test?