Anorexia nervosa rising prevalence of eating disorders in adolescence are "increase of adipose tissue in girls, hormonal changes of puberty, societal expectations of increased independence and autonomy that are particularly difficult for anorexic adolescents to meet; [and] increased influence of the peer group and its values." Early theories of the cause of anorexia linked it to childhood sexual abuse or dysfunctional families; evidence is conflicting, and well-designed research is needed. The fear of food is known as "sitiophobia", "cibophobia", or "sitophobia" and is part of the differential diagnosis. Other psychological causes of anorexia include low self-esteem, feeling like there is lack of
Fear of the dark same article states that "the phobia has been known to be extremely disruptive to adult patients and… incapacitating". The word "nyctophobia" comes from the Greek νυκτός, "nyktos", genitive of νύξ, "nyx", "night" and φόβος, "phobos", "fear". The fear of darkness or night has several non-clinical terminologies—"lygophobia", "scotophobia" and "achluophobia". Fear of the dark Fear of the dark is a common fear or phobia among children and, to a varying degree, adults. A fear of the dark does not always concern darkness itself; it can also be a fear of possible or imagined dangers concealed by darkness. Some degree of fear