January 2022 in “Bio web of conferences/BIO web of conferences” The conclusion is that normal trace element levels in newborn calves' hair are between the 25th and 75th percentiles, and levels outside this may indicate diselementosis.
December 2021 in “Dermatology research” Low levels of vitamin B12, ferritin, and calcium are linked to premature graying of hair.
October 2021 in “Interfaces Científicas” Nutricosmetics for hair treatment often contain biotin, pyridoxine, zinc, and other nutrients, but more research and professional guidance are needed for their use.
September 2021 in “Journal of the Egyptian Women's Dermatologic Society (Print)” The study concluded that low iron and vitamin D levels in women might play a role in chronic hair loss, despite no significant difference between those with and without hair loss.
April 2021 in “MEDICINUS” Acrodermatitis enteropathica can occur even with normal zinc levels, and zinc supplements can improve symptoms.
Taking supplements after sleeve gastrectomy surgery can reduce hair loss by addressing nutritional deficiencies.
December 2020 in “Journal of Drugs in Dermatology” The document concludes that more research is needed to confirm if blood tests for things like iron and vitamin D are helpful for hair loss from Telogen effluvium.
September 2020 in “Benha Veterinary Medical Journal” Sheep with skin diseases often have lower levels of certain trace elements and vitamin A, and higher oxidative stress and immunoglobulin E levels.
September 2020 in “Nature, Environment and Pollution Technology/Nature, environment and pollution technology” Eating plants from polluted areas can cause liver and kidney damage in rats due to toxic metals.
July 2020 in “International journal of clinical & experimental dermatology” Hair loss in women aged 20-30 is often linked to deficiencies in Vitamin D, zinc, ferritin, and haemoglobin, as well as low SHBG levels in those with irregular periods.