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Male and female bodies respond differently to stress, influenced by hormones and development stages, with implications for stress-related diseases.

Opioid painkillers can cause many side effects, including breathing problems and addiction, but are generally considered safe when used properly.

Stem cells in the hair follicle are regulated by their surrounding environment, which is important for hair growth.

Human dermal fibroblasts are the main cells targeted by a virus that can cause a deadly skin cancer, and a certain inhibitor can effectively block this infection.

Conditioned media from mesenchymal stem cell cultures could be a more effective alternative for regenerative therapies, but more research is needed.

Smart biomaterials that guide tissue repair are key for future medical treatments.

Muscles and nerves that cause goosebumps also help control hair growth.

Sox2-positive dermal papilla cells have unique characteristics and contribute more to skin and hair follicle formation than Sox2-negative cells.

Compartmentalized organization might be crucial for stem cells to effectively respond to growth or injury.

The document concludes that understanding hair and feather regeneration can help develop new regenerative medicine strategies.

Apoptosis is crucial for healthy skin and treating skin diseases.

Scarring alopecias are complex hair loss disorders that require early treatment to prevent permanent hair loss.

Negative expectations can cause adverse effects in patients even without active treatment, and managing this nocebo effect involves better communication and patient-clinician relationships.

Low testosterone and 5α-reductase inhibitors can harm men's metabolic and sexual health; testosterone therapy may help, but discussing 5α-RIs' side effects is important.

Hairless protein is crucial for healthy skin and hair, and its malfunction can cause hair loss.

The document concludes that new treatments are needed to better manage acne and reduce side effects related to current therapies.

Dogs could be good models for studying human hair growth and hair loss.

Thymosin β4 helps improve skin healing and reduce scarring.

KLF4 is important for maintaining skin stem cells and helps heal wounds.

Sebaceous glands play a key role in skin health, immunity, and various skin diseases.

Hair follicles are essential for skin health, aiding in hair growth, wound healing, and immune function.

Adding stem cells to fat grafts for facial rejuvenation might improve outcomes, but more research is needed to confirm safety and effectiveness.

Primary care doctors should address female sexual dysfunctions to improve women's sexual health and life quality.

Hair analysis can show nutritional status and environmental exposure, with phosphorus being very stable in hair and differences found based on gender and conditions like depression and autism.

Skin structure complexity and variability are crucial for assessing skin toxicity in safety tests.

Genes related to keratin, skin cell differentiation, and immune functions are key in hedgehog skin and spine development.

The document concludes that sex hormones are crucial for mammalian reproduction, health, and behavior, and require more research for therapeutic use.

New treatments and technologies in laser medicine show promise for improving skin conditions, fat reduction, cancer treatment, wound healing, and hair restoration.

Sebum production varies by individual and is influenced by age, gender, and hormones, affecting skin and hair health.

The document explains hair and nail biology, common hair loss conditions and treatments, oral and genital skin diseases, and the risks and treatments associated with squamous cell carcinoma.