A hormonal problem? Dr Paul Mason with some case studies.

https://m.youtube.com/watch?v=wBsnk2PtPeo&t=335s#mce_temp_url#

Totally not related but one I thought was interesting, an oldie, on Vitamin D. A different way to think about it possibly???

https://m.youtube.com/watch?v=NVqNO8rgYKk#mce_temp_url#