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

Fat cells are important for healthy skin, hair growth, and healing, and changes in these cells can affect skin conditions and aging.

Menopause reduces skin collagen and elasticity, and while estrogen therapy can help, its risks require careful consideration.

Testosterone with or without finasteride doesn't improve thinking skills in older men with low testosterone.

Liver transplantation is a viable option for children with propionic acidemia, improving quality of life and diet, but does not remove all risks and long-term brain outcomes are uncertain.

Hormonal treatments can help with acne but are not the first choice due to side effects and the need for careful patient selection.

Aging mice have slower hair regeneration due to changes in signal balance, but the environment, not stem cell loss, controls this, suggesting treatments could focus on environmental factors.

Zinc deficiency in children can cause skin issues and can be serious if not diagnosed and treated properly.

Mushrooms have beneficial properties for skin and hair care products and have great potential for future cosmetic use.

Human hair follicle stem cells can turn into multiple cell types but lose some of this ability after being grown in the lab for a long time.

Mice lacking a key DNA methylation enzyme in skin cells have a lower chance of activating stem cells necessary for hair growth, leading to progressive hair loss.

Wnt signaling is crucial for skin and hair development and its disruption can cause skin tumors.

Fat-derived stem cells, platelet-rich plasma, and biomaterials show promise for healing chronic skin wounds and improving soft tissue with few side effects.

Janus kinase inhibitors are promising drugs for treating autoimmune and inflammatory diseases.

Blue light promotes hair growth by interacting with specific receptors in hair follicles.

The document explains how the male reproductive system works, its role in making testosterone, and how conditions like obesity can disrupt it, leading to low testosterone and fertility issues.

Topical drugs and near-infrared light therapy show potential for treating alopecia.

Advanced human skin models improve drug development and could replace animal testing.

The FOXN1 gene is crucial for developing immune cells and preventing immune disorders.

FFA's causes may include environmental triggers and genetic factors.

New LPA receptors (LPA4, LPA5, LPA6) have diverse roles in the body.

Oestrogens help maintain healthy skin, heal wounds, and may protect against skin aging and cancer.

Natural 5AR inhibitors effectively improve mild to moderate hair loss in men.

Tissue-resident memory T cells can protect against infections and cancer but may also contribute to autoimmune diseases.

Skin problems are very common in people with end-stage kidney disease.

European guidelines recommend regular eye and ear exams, skin care, vitamin D supplements, and cautious use of medications for managing congenital ichthyoses.

The document concludes that for hair and feather growth, it's better to target the environment around stem cells than the cells themselves.

Wnt signaling is crucial for skin wound healing and reducing scars.

Platelet preparations generally show positive effects on wound healing and facial rejuvenation, but more thorough research is needed to confirm their effectiveness.

Doctors need to be better prepared to assess and treat obesity in patients.