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Some bacteria use arsenic compounds as antibiotics, and others have evolved resistance; a particular arsenic-based compound shows potential as a new antimalarial treatment.

Selenium deficiency worsens aging symptoms in mice.

Different species and human skin models vary in their skin enzyme activities, with pig skin and some models closely matching human skin, useful for safety assessments and understanding the skin's protective roles.

Sheep wool follicles absorb different amino acids at various rates and locations, which could affect wool growth based on diet and genetics.

MEG3-miRNAs help control wool traits in young Tan sheep by regulating immune responses, but their decline with age leads to wool changes.

Loss of Dnmt3a and Dnmt3b increases aggressive skin tumors by affecting PPAR-γ.

m6A deregulation plays a key role in PCOS and could lead to new treatments.

A yeast-based test can detect the steroid methyltestosterone in urine longer than traditional methods.

Melatonin affects many body functions beyond sleep by interacting with specific receptors in various tissues.

A molecule called α-ketobutyrate was found to extend lifespan and improve aging-related symptoms in worms and mice by activating certain cellular pathways and may help develop anti-aging treatments for humans.

Histone demethylases can change gene expression and may be linked to diseases like cancer.

Keratose, derived from human hair, is a non-toxic biomaterial good for tissue regeneration and integrates well with body tissues.

Sphynx cats are hairless and Devon Rex cats have curly hair due to specific genetic mutations.

Hair grays due to oxidative stress and fewer functioning melanocytes.

Restoring mitochondrial function in mice reversed their skin wrinkling and hair loss.

The 190-kbp domain contains all human type I hair keratin genes, showing their organization and evolution.

Some breast cancer chemotherapy can cause permanent hair loss.

Hair greying is caused by oxidative stress damaging hair follicles and melanocytes.

Toxic Shock Syndrome cases increased due to new factors, but decreased with public health measures and changes in tampon use.

A second domain of high sulfur KAP genes on chromosome 21q23 is crucial for hair structure.

A new method effectively separates keratin-associated proteins and keratin from human hair.

Permanent waving weakens hair by altering its protein structure.

Some alternative treatments for hair loss might work, but more research is needed.

Iron deficiency may contribute to hair loss.

Men's hair loss is caused by hormones and genes, and can be treated with medication and surgery, while graying is due to aging and has no prevention except dyeing.

Certain DNA variants can predict straight hair in Europeans but are not highly specific.

Some medications might reverse gray hair, especially those that reduce inflammation or stimulate pigment production, and vitamin B might help.