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Hair cortisol levels peak in the third trimester and decline postpartum.

Changing light periods synchronized wool growth cycles in sheep.

The study identified key genes that align with the cashmere growth cycle in goats, which could help improve cashmere production timing.

Long-lived proteins may predict age-related diseases.

Confinement in farrowing crates doesn't increase chronic stress in sows, but hair cortisol measurements may not reliably indicate stress due to hair growth variations.

The Rotterdam Study found risk factors for elderly diseases, links between lifestyle and genetics with health conditions, and aimed to explore new areas like DNA methylation and sensory input effects on brain function.

Humans lost body hair relatively recently in evolution.

B6J mice live longer before 24 months, but B6N mice live longer after; both strains show weight gain, increased food and water intake, and health issues as they age.

Different populations have distinct hair structures related to their ancestry.

Changes in testosterone and estrogen receptor genes can affect how men age, influencing body fat, hair patterns, and possibly leading to skin disorders.

Small hormonal imbalances can cause significant health problems, so more sensitive testing for hormone-disrupting chemicals is needed.

Ancient immune and signaling pathways still regulate blood cell development.

Eating fewer calories may slow aging and removing old cells can increase lifespan in mice.

The study suggests that higher levels of SIRT1 and SIRT2 may improve overall cell health and aging processes.

Long working hours increase the risk of hair loss in Korean male workers.

The model accurately simulates human hair growth and hair loss patterns.

Male and female mice handle stress differently.

Women with regular menstrual cycles and PCOS have linked kisspeptin and LH hormone patterns, unlike those with irregular cycles.

Short photoperiods improve cashmere growth and quality in goats by changing hormone levels and gene expression.

Animals that change color with the seasons mainly do so in response to daylight changes, but climate change is causing camouflage problems that may require evolutionary changes.

Small changes in hormones can significantly impact health, showing the importance of sensitive testing for chemicals that disrupt hormones.

Certain ESR1 gene variations may affect hormone levels and fat distribution in women with high male hormone levels.

A new tool can analyze hair to detect changes due to hormones, genetics, and aging.

Biomedical innovations could extend human lifespan, but may impact pension systems.

Hair cortisol and cortisone levels increase with age, are higher in diabetics, vary by gender, decrease with frequent hair washing, and are lower in winter.

Older obese women with PCOS have higher cardiovascular and metabolic risks despite lower androgen levels.

Genetically variant peptides are reliable for forensic identification despite age-related changes in hair proteins.

PCOS may have evolved as an advantage in past environments with food scarcity.