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Neonate scalp hair is thinner, lacks a medulla, and has smaller follicles compared to adult hair.

Human hair has more unsaturated fats inside than on the surface, and certain lipids may help bind the outer and inner layers together.

The research found that postmortem root bands in hair are likely caused by the breakdown of a specific part of the hair's inner structure after death.

Hair fibers degrade and change color in very basic water.

THH and PAD type III appear together early in hair growth, but deiminated THH appears later, suggesting another factor is involved.

Hair ages as the cuticle wears down, especially beyond 1 meter from the root, affecting its strength and shine.

Treatments improved hair surface and scale structure but didn't increase certain bonds in the hair cortex.

Chemical treatments severely damage hair cuticles, especially in previously treated hair.

Hair damage increases significantly with higher temperatures and longer heating times.

Removing both Atr and Trp53 genes in adult mice causes severe tissue damage and death due to DNA damage.

Cellular senescence has both cancer-blocking and cancer-promoting effects, and targeting senescent cells may improve health and lifespan.

Increasing neuropeptide Y in the brain can slow aging signs in mice.

Androgen receptors in the mouse brain may explain cognitive and mood changes in prostate cancer treatment.

Environmental, chemical, mechanical, and personal health factors can all damage hair and contribute to hair loss or changes in hair quality.

There are many treatments for permanent hair loss disorders, but their effectiveness varies and there's no clear best option.

Microneedling can weaken hair in some AGA patients.

Anabolic-androgenic steroids can damage the brain, causing mood and cognitive problems.

PDLLA filler can improve hair thickness and shine by reducing age-related hair decline.

Repeated hair dyeing significantly damages hair.

AFM can diagnose hair disorders by revealing detailed hair surface changes.

Modern hair styling products don't repair hair but improve its surface and stability.

Plica neuropathica can occur with diffuse alopecia and should be considered in diagnosis.

Trastuzumab deruxtecan is effective for HER2-positive breast cancer but requires careful management of side effects.

Sacituzumab govitecan improves quality of life and symptoms in breast cancer patients, except for causing more diarrhea.

Sex hormones affect reproduction, sexual development, and oral health, and it's important for dental practitioners to understand their effects and interactions.

Hair shaft dysplasias are abnormal hair conditions that can be inherited or acquired and may signal other health issues, with limited treatment options available.

Changing neuroactive steroids in baby male rats affects their memory and learning differently as they grow up.

A person with Turner Syndrome showed severe schizophrenia that didn't respond to treatment and had brain shrinkage.

PCOS symptoms change with age; younger women have higher androgen levels and less metabolic issues, while older women face more metabolic challenges despite milder PCOS symptoms.

Estrogens help reduce skin aging, and SERMs might offer similar benefits without the risks of hormone therapy.