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Higher epinephrine concentration and specific injection sites increase scalp vasoconstriction time.

Black hair in cats has higher cortisol levels than white hair.

People with depression often have higher hair cortisol levels, while those with PTSD tend to have lower levels, but more research is needed to understand this fully.

High levels of cortisol in hair show long-term stress which can lower fertility in animals.

First-time mothers had higher stress hormone levels in late pregnancy than mothers who had given birth before.

Hair cortisol levels in brown bears can be affected by both long-term and short-term stress.

Moving horses to new places can increase their stress levels, as shown by higher stress hormone in their hair.

External factors can significantly affect hair cortisol levels, so it's not always a reliable stress marker.

Hair cortisol may be a good indicator of recent mood in people with bipolar disorder.

Plant extracts in shampoo improved hair thickness and density in men with hair loss.

Wildebeest stress and hormone levels are influenced by food availability, human presence, and reproductive cycles.

Children with lower inhibitory control experience more stress when starting third grade.

Monkey hair cortisol levels are not affected by how fast their hair grows.

First-episode psychosis patients have higher hair cortisol levels, indicating early stress response issues.

Hair sample weight is a better measure for cortisol levels in hair than hair protein concentration.

Lower family income is linked to more stress in parents and more behavior problems in children.

Hormone levels in hair vary across the head, with the highest concentration of a key hormone linked to hair loss at the top.

Hair follicles increase hair cortisol levels, so consistent hair collection methods are important.

Pigs in farrowing crates and loose-housing systems showed no difference in chronic stress levels as measured by hair cortisol.

Hormone levels in hair change during pregnancy, with progesterone increasing significantly compared to non-pregnant women.

Measuring reproductive hormones in brown bear hair could help identify their sex and reproductive state, but better collection methods or lab techniques are needed.

Selecting Angus cattle for earlier puberty lowers prolactin levels but doesn't affect hair growth.

A balanced diet is crucial for normalizing hormone levels and managing obesity-related issues.

Hair samples can't reliably detect hypercortisolism in anorexia nervosa patients.

Pandemic stress worsens hair loss and skin issues, suggesting combined mental and skin care treatments.

Using stem cells from hair follicles to treat female hair loss is safe and effective after six months.

Plasma protein binding significantly affects glucocorticosteroid concentration in blood, saliva, and hair.

Chronic stress increased after lockdown, especially in young adults and females.

High hair cortisol levels indicate stress in cows due to poor shelter conditions and health issues.

Hair cortisol is a reliable way to measure long-term stress in animals.