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The document concludes that while some organisms can regenerate body parts, mammals generally cannot, and cancer progression is complex, involving mutations rather than a strict stem cell hierarchy.

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.

Future research should focus on making bioengineered skin that completely restores all skin functions.

The document concludes that skin and nail changes can indicate various underlying health conditions.

Histone demethylases play a key role in the development of many diseases and may be targets for treatment.

A compound from Calophyllum inophyllum L. leaf may help treat non-small cell lung cancer.

Alpha-blockers and 5-alpha reductase inhibitors are main treatments for BPH, with new support for phosphodiesterase-5 inhibitors and beta-3 agonists.

Nutraceuticals that promote hair growth do not reduce tamoxifen's effectiveness in breast cancer treatment.

Heavy metals like arsenic, cadmium, and lead can increase cancer risk and worsen outcomes.

Immune cells are essential for early hair and skin development and healing.

The safety and effectiveness of gender-affirming treatments for children are uncertain, with potential long-term risks like infertility.

Stem cells can improve wound healing, reduce scars, promote hair growth, rejuvenate skin, and enhance fat grafts in plastic surgery, but there are still some concerns.

The document says that early treatment of Acne Vulgaris is important to prevent scarring and that adult onset acne is common in women, often due to hormonal imbalances.

Cancer rates are increasing in developed countries, with estrogen, aging, low vitamin D3, and HPV infection as common causes.

Diabetes can cause a variety of skin disorders, some of which may signal more serious health issues.

The document concludes that accurate diagnosis of male and female gonadal disorders is crucial for effective treatment and better patient outcomes.

Finding the cause of a cat's itchiness requires a careful process and good communication with the owner.

The document concluded that stem cells are crucial for skin repair, regeneration, and may help in developing advanced skin substitutes.

Researchers discovered potential origins and new treatments for skin cancer, including biomarkers for melanoma and therapies that reduce tumor growth.

Tretinoin gel is safe for sun exposure, but tacalcitol doesn't significantly improve non-segmental vitiligo.

The document concludes that treating skin conditions should include psychological care and a multidisciplinary approach is essential for effective management.

Skin symptoms are important for diagnosing infections in children.

New skin treatments in 1987-1988 showed effectiveness for various conditions, but some had side effects or risks.

New techniques and findings in dermatologic surgery show improved pain management, safer liposuction, better hair transplantation, and effective treatments for skin conditions.

Taking calcium may help elderly with osteoporosis, birth control with levonorgestrel doesn't increase heart attack risk, Salmonella can cause arthritis, a national ethics committee is recommended, and sulfasalazine might help with a hair loss condition.

Experts discussed hair care, genetic hair defects, hair loss treatments, nail surgery, lupus treatments, skin infections, and cosmetic allergies.

Androgens play a key role in hair growth.

Hydrangea serrata extract may promote hair growth and improve hair health.

The study concluded that the arachidonic acid pathway and the protein KRT79 play a role in determining the fineness of cashmere.

New treatments for ichthyosis, like protein replacement and gene therapy, show promise and may become standard care.