Human hair color account for all possible shades of brown, blond, or red (for example, platinum blond versus dark blond/light brown), nor does it explain why hair color sometimes darkens as a person ages. Several gene pairs control the light versus dark hair color in a cumulative effect. A person's genotype for a multifactorial trait can interact with the environment to produce varying phenotypes (see quantitative trait locus). Natural hair color can be brown, blond, black, red, or white; all natural hair colors including grey, white and lightest blond, are shades of brown. The Fischer–Saller scale, named after Eugen Fischer and , is
Medical anthropology the nursing/care practices associated with these. Furthermore, in Europe the terms "anthropology of medicine", "anthropology of health" and "anthropology of illness" have also been used, and "medical anthropology", was also a translation of the 19th century Dutch term "medische anthropologie". This term was chosen by some authors during the 1940s to refer to philosophical studies on health and illness. The relationship between anthropology, "medicine" and medical practice is well documented. General anthropology occupied a notable position in the basic medical sciences (which correspond to those subjects commonly known as pre-clinical). However, medical education started to be restricted to the confines