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Although researchers are not certain what causes seasonal affective disorder,they suspect that it has something to do with the hormone melatonin. excessive melatonin release during winter in people with SAD may account for their.drowsiness or depression

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Which hormone is thought to act as a sleep trigger and may be the key to seasonal mood changes?

Melatonin is the hormone that is thought to act as a sleep trigger and is associated with regulating circadian rhythms. It is also linked to seasonal affective disorder (SAD) as lower levels of sunlight can lead to decreased melatonin production, potentially contributing to mood changes in some individuals.


What is the relationship between geography with psychology?

The question reminds me of the expression, "Absence makes the heart grow fonder". Polar countries (away from the equator) have less sunlight during winter and this creates seasonal affective disorder, a feeling of depression. People in different countries have different cultures which is linked to psychology obliquely. Generally, these are separate topics.


What do you call a disorder in which females are the only ones who can be carriers?

a sex-linked, or X-linked disorder


What is an X-linked disorder that causes malformation of the skull?

An x linked disorder that causes malformattion of the skull is


What is required for an individual to have a sex-linked disorder?

A sex-linked disorder is when a mutation of genes overrides the normal function of a another gene. For example, male-pattern baldness is a sex-linked disorder.


Is bipolar disorder type autosomal or X linked?

X Linked


Why can women be a sex-linked genetic disorder but a male cannot?

Women can carry or have a sex linked (x-linked) genetic disorder. Males cannot be carriers, they either have the disorder or they don't: this is because the male has only one X chromosome.


What is sex linked disorder?

it means that you inherit this form of disorder either from your mother or father's sex chromosomes. For example- color blindness or Haemophillia.


What is a genetic disorder caused by sex linked gene?

There are so many genetic disorder caused by sex linked to name few; Auto Immune disorder, Hemophilia, Night Blindness etc.


What sex link is a recessive disorder?

Muscular dystrophy is a sex-linked recessive disorder.


How is adrenoleukodystrophy inherited?

It is an X-linked recessive disorder.


One example of sex-linked disorder is?

Hemophilia