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Men are more likely to have severe COVID-19 cases and fatalities than women due to factors like lifestyle, aging, and biological differences.

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

New effective scar treatments are urgently needed due to the current options' limited success.

Erectile dysfunction is increasingly common in men under 40, with many physical and psychological causes, and various treatment options available.

Hair stem cell regeneration is controlled by signals that can explain different hair growth patterns and baldness.

Isotretinoin is highly effective in treating severe acne, rosacea, and gram-negative folliculitis.

Chemotherapy can cause skin problems like hair loss, mouth sores, and skin darkening, and recognizing these can affect treatment decisions.

Epirubicin is as effective as doxorubicin for cancer treatment with less heart damage, but doesn't work on doxorubicin-resistant cancers.

Some skin medications are safe during pregnancy and breastfeeding, but others can harm the baby and should be avoided.

Stress-related substance P may lead to hair loss and negatively affect hair growth.

Estrogens significantly influence hair growth by interacting with receptors in hair follicles and may help regulate the hair growth cycle.

New research suggests that skin cell renewal may not require a special type of cell previously thought to be essential.

Follicular Unit Extraction (FUE) is a less invasive hair transplant method with minimal scarring, suitable for about 60% of patients, especially those needing fewer grafts and quicker recovery.

Using CDK inhibitors on rats showed a reduction in chemotherapy-caused hair loss, but later experiments could not repeat these results.

Nanoparticles improve drug delivery through the skin but more research is needed on their long-term effects and skin penetration challenges.

Silver can help prevent and treat infections but its effectiveness varies and should be weighed against costs and side effects.

Trilostane effectively improved symptoms in dogs with a certain adrenal gland disorder.

Alopecia areata is an autoimmune disease causing patchy hair loss, often with other autoimmune disorders, but its exact causes are unknown.

Alopecia areata is a common autoimmune disease affecting about 2% of people, causing significant disability and often associated with mental health issues and other autoimmune conditions.

Postpartum depression is linked to changes in brain chemicals, inflammation, stress, and certain genes, and can potentially be identified by markers like specific steroids, serotonin levels, and vitamin D levels.

Male hormones affect COVID-19 severity and certain drugs targeting these hormones could help reduce the risk.

The niche environment controls stem cell behavior and plasticity, which is important for tissue health and repair.

Vitamin D is important for skin health and may affect conditions like psoriasis and hair loss, but more research is needed to understand its role fully.

Eating less sugar, milk, and saturated fats and more vegetables and fish may help treat and prevent acne.

Estrogen loss during menopause worsens skin health, but hormone replacement therapy may improve it, though more research is needed.

Turmeric may have benefits for skin health, but more research is needed to confirm its effectiveness.

Exosomes could potentially enhance tissue repair and regeneration with lower rejection risk and easier production than live cell therapies.

GABRA2 gene variations impact alcohol response, and hair loss medication finasteride reduces some effects.

Fat-derived stem cells show promise for skin repair and reducing aging signs but need more research for consistent results.

Forehead modification greatly increases the perception of femininity and is a safe procedure.