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Urologists should monitor mental health in patients taking finasteride due to potential links to suicidal thoughts, adjusting dosage or stopping use if necessary. More research is needed to confirm if finasteride causes these thoughts.

Hard α-keratin in hair has a unique, nonordered structure, different from other fibers.

The study improved understanding of keratin fiber structure by showing consistent microfibril diameter but varying distances and electron density profiles.

The research found two types of calcium in human hair, one that varies among individuals and another that is consistent across people.

Human hair has a new region with ordered filaments and the cuticle contains β-keratin sheets.

X-ray diffraction of hair might help detect breast cancer non-invasively.

Hair analysis can detect small changes in dietary zinc intake.

Trace elements like calcium, iron, and zinc are unevenly distributed in hair, while sulfur is even, and increased phosphorus and potassium levels are linked to skin reactions.

Perming and bleaching damage hair differently, with bleached hair having more cysteic acid in the cuticle.

High calcium levels in hair may indicate early breast cancer.

Elemental composition of hair affects its x-ray diffraction patterns.

Calcium soaps are present in human hair and can be removed with acid.

Shampoo coacervates can cause scalp irritation due to released surfactants.

Hair analysis can help diagnose cell ion channel activity and calcium deficiency.

The method effectively maps lead and zinc in hair, aiding understanding of heavy metal exposure risks.

All five hair fiber products improved appearance but didn't stick to completely bald areas.

Hair tissue can help monitor environmental and public health risks.

Hyaluronic acid microneedles help deliver minoxidil derivatives effectively for hair regrowth.

Hair can show daily calcium changes, linked to body calcium levels and influenced by hormones, and can help assess calcium metabolism issues.

The new X-ray technique allows for precise and non-destructive measurement of elements in hair, creating the first database of its kind for a specific ethnic group.

The protein structures in the hair and tendon were preserved, but their molecular arrangements changed.

Selective chemical epilation effectively treats tinea capitis without harmful side effects.

Hair analysis can help screen for serious diseases like cancer and osteoporosis.

High-resolution x-ray images showed three main structures in human hair: medulla, cortex, and cuticle.

Keratinous tissues have multiple structural layers, including ordered keratin and lipid granules.

Hair structure forms the same way inside and outside the body.

Using 100–300 keV X-ray energy is best for treating deep-seated tumors with microplanar beam radiation therapy.

Combining hair x-ray diffraction with mammography improves breast cancer detection.

Green hair has high copper levels due to contaminated water and damaged hair cuticles.

Microbeam radiation therapy's dose distribution changes with depth.