Black henna can contain many things except henna. It is likely to contain indigo or other more permanent dyes and it's not safe, it can cause allergic reactions in many cases. Normal henna leaves a brownish color. I'm not sure where you are or what your means are but home hair dyes are a much better alternative.
Prior to the availability of the pure levothyroxine, desiccated animal thyroid extract was the only treatment for hypothyroidism. Today, some individuals prefer dessicated thyroid extract as a more natural thyroid hormone.
1. Reliance on TSH. According to mainstream medicine, TSH (thyroid stimulating hormone) is the gold standard for the diagnosis and treatment of thyroid dysfunction. This hormone released by the pituitary gland in the brain stimulates the butterfly-shaped thyroid gland in our necks to produce thyroid hormones.