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Using 5-butylpicolinate esters improves the sensitivity and reliability of detecting testosterone and dihydrotestosterone in saliva.

Hair cortisol is a reliable marker of long-term cortisol levels and is linked to daytime saliva cortisol but not morning levels.

The model accurately predicts age from saliva and buccal cells for forensic use.

Standardized procedures are crucial for collecting and preparing biological samples to ensure accurate clinical metabolomics results.

Hair can reliably measure average estradiol levels over months in humans and monkeys.

Hair cortisol levels can reflect salivary cortisol levels in humans.

Hair analysis can somewhat track past testosterone levels but is influenced by factors like hair washing, growth rate, sex, and hair color.

The trial aims to understand how obesity and lifestyle affect circadian rhythms in people with schizophrenia and bipolar disorder.

Hair cortisol is a reliable stress indicator in cattle but may not be valid for pigs.

Bioengineered salivary glands in mice can produce saliva when tasting sour or bitter, but have different protein levels and nerve signals compared to natural glands.

Men with low or no sperm count have lower salivary testosterone levels, and saliva testing can measure their testosterone well.

The new test can measure very small amounts of testosterone in hair, and grinding the hair up first gives more accurate results.

A new non-invasive method can analyze skin mRNA to understand skin diseases better.

DNA profiling in forensics has improved, but predicting physical traits and ancestry from DNA has limitations and requires ethical consideration.

Shift nurses show altered body temperature and stress hormone levels, suggesting their body clocks adjust to irregular schedules.

Gingivitis may increase a hormone linked to ovarian function in women with a certain ovary condition, and treating gum disease could help manage it.

Childhood sexual trauma, especially between ages 5-7, is linked to lower cortisol levels in adult hair, suggesting long-term stress response changes.

The RapidHIT ID system can effectively get DNA profiles from hair roots with enough cells.

Radiation damages salivary glands by harming blood vessels, but antioxidants might help protect them.

Segmental hair analysis can track testosterone over time but needs adjustments for sex, hair color, and washing frequency.

Genetic and environmental factors, like smoking and exercise, affect male hair loss.

Higher androgen levels do not cause baldness in men.

The conclusion is that analyzing RNA from skin oils is a promising way to understand skin diseases.

Hair cortisol levels can show increased stress during late pregnancy but only for up to six months.

A genetic region near the PAX1 gene is linked to a higher risk of scoliosis in females.

Mutations in the PADI3 gene are linked to a higher risk of scarring hair loss in women of African descent.

Men, diabetes, and high inflammation levels lead to higher COVID-19 antibodies.

Both genetic and lifestyle factors significantly affect female hair loss.

Finasteride side effects in young men may be linked to specific gene variations.

Lack of cystatin M/E causes thin hair and dry skin.