Sources

Good indication of the danger of cadmium in relation to hair loss:

https://pmc.ncbi.nlm.nih.gov/articles/PMC4639951/

Useful source for how heavy metals can also induce alopecia

https://pmc.ncbi.nlm.nih.gov/articles/PMC7325209/

Not causal proof, but an association between hair loss and serum heavy metal concentration:

https://pmc.ncbi.nlm.nih.gov/articles/PMC5996622/

Proof that you can quickly change hair mineral composition with dietary intervention:https://www.frontiersin.org/journals/nutrition/articles/10.3389/fnut.2021.708069/

Cadmium binding to SHBGhttps://www.mdpi.com/2305-6304/11/7/589?