4 citations,
October 2020 in “Therapeutic drug monitoring” Lower tacrolimus levels (4-7 ng/mL) after liver transplant may be safe and improve graft and kidney function.
May 2023 in “Animal Reproduction Update” High levels of cortisol in hair show long-term stress which can lower fertility in animals.
October 2022 in “Linköping University medical dissertations” The method shows hair testosterone levels reflect those in saliva, but are affected by various factors and may indicate a risk for heart attack.
February 2024 in “Psychoneuroendocrinology” Mothers with lower stress during pregnancy but higher stress after birth had infants with lower development scores.
May 2023 in “General and comparative endocrinology” Monkey hair cortisol levels are not affected by how fast their hair grows.
22 citations,
May 2019 in “Animals” High hair cortisol levels indicate stress in cows due to poor shelter conditions and health issues.
1 citations,
December 2021 in “American Journal of Obstetrics and Gynecology” Hair cortisol levels peak in the third trimester and decline postpartum.
September 2023 in “Scientific reports” Segmental hair analysis can track testosterone over time but needs adjustments for sex, hair color, and washing frequency.
12 citations,
December 2017 in “Scientific reports” The new test can measure very small amounts of testosterone in hair, and grinding the hair up first gives more accurate results.
Adequate vitamin D might lower, and high hair chromium might increase DNA damage in obese women.
October 2024 in “AL-MIKRAJ Jurnal Studi Islam dan Humaniora (E-ISSN 2745-4584)” A 30% papaya skin extract hair tonic effectively promotes hair growth.
122 citations,
October 2013 in “PEDIATRICS” Maternal stress during pregnancy affects a child's stress levels.
71 citations,
December 1987 in “Journal of animal science/Journal of animal science ... and ASAS reference compendium” Hair analysis is not a precise way to measure livestock's mineral status but can help when used with other methods.
33 citations,
November 2007 in “JAT. Journal of applied toxicology/Journal of applied toxicology” Human scalp hair on mice can effectively monitor mercury exposure.
31 citations,
December 2002 in “Biochimica et biophysica acta. G, General subjects/Biochimica et biophysica acta. General subjects (Online)” The research found two types of calcium in human hair, one that varies among individuals and another that is consistent across people.
20 citations,
October 2017 in “Drug testing and analysis” Drugs localize differently in hair strands based on their properties.
5 citations,
January 2021 in “Biomedicine & Pharmacotherapy” Policosanol helps treat hair loss by balancing hormones and supporting hair growth.
4 citations,
December 2018 in “Macedonian Journal of Chemistry and Chemical Engineering” A new method accurately measures amino acids in treated hair, showing bleaching reduces amino acids while protein treatments increase them.
2 citations,
June 2021 in “Medicine” High levels of cortisol in hair are linked to a greater risk of brain aneurysm rupture.
1 citations,
October 2020 Hair can reliably measure average estradiol levels over months in humans and monkeys.
March 2024 in “American journal of veterinary research” Clippers are the best tool for collecting dog hair for chemical tests, being fast and stress-free for the dog.
May 2023 in “Frontiers in chemistry” Zolpidem shows up in hair from the top back of the head after one dose and fades over time, suggesting it gets into hair through blood and sweat.
July 2022 in “Research Square (Research Square)” Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.
January 2018 in “Springer eBooks” Gender affects hair and scalp characteristics, with differences in hormone responses, graying patterns, and trace metals.
12 citations,
November 2022 in “Toxics” EtG in hair can help detect alcohol use but may be inaccurate in people with certain health conditions.
8 citations,
January 2018 in “European journal of dermatology/EJD. European journal of dermatology” The girl's regrown brown hair had less of certain pigments than her original black hair.
1 citations,
April 2021 in “Han'gug miyong haghoeji/Journal of the Korean society of cosmetology” Aspartic acid at 0.75% makes perms more effective and less damaging to hair.
24 citations,
March 1987 in “Journal of The American Academy of Dermatology” Minoxidil 1% and 2% best promote hair growth and may prevent hair loss.
7 citations,
May 2021 in “General and comparative endocrinology” Muskoxen's qiviut cortisol levels indicate their stress hormone activity over the hair growth period.
2 citations,
January 2007 in “Toxicologie Analytique et Clinique” A woman survived a massive lithium overdose that caused a form of hair loss.