Actually having a vitamin D level that is deficient or insufficient and having ferritin levels at or below 60 are both linked separately to hair loss. The vitamin D effect is strong in both males and females, while the ferritin issue is mainly a women's problem.
The normal range in women...
If you read the story from the beginning it was Elizabeth's 4th child and she was practised in observing her hair.
Can you notice improved ferritin levels in 5 weeks? Some people can while others can't. The figures for noticing changes in 3 -6 months are averages. I noticed my hair bad...