There are two reason for hair loss if she is hypothyroid: 1) being on the lousy T4-only meds like Synthroid, Leovyxl, Levothyroxine, which leave nearly everyone with lingering hypo symptoms, including hair loss 2) having low storage iron, aka low ferritin, which is common with patients on the lousy T4-only meds and causes hair loss.

Read this about why T4 doesn’t work and can cause hair loss: http://www.stopthethyroidmadness.com/t4-only-meds-dont-work

And this about low ferritin:http://www.stopthethyroidmadness.com/ferritin

And she should read the entire Stop the Thyroid Madness website, a thyroid patient advocacy website by Thyroid Patient Activist Janie Bowthorpe. Janie also wrote the book by the same name, and readers report liking it even more than the website, since it’s easier to refer to, and has even more info.