Ever wondered why you feel energetic and lively on bright sunny days and lacklustre during the dark winter season? Well, researchers from University of Toronto, Ontario, Canada have
Have you noticed how often the weather outside decides your mood? It’s not uncommon to feel sprightly and full of life on bright sunny days and indolent and indolent in the dark days of winter. Surprising? Now, researchers at the University of Toronto have understood the biological concoction that makes us behave the way we do.
The research team has identified the mechanism underlying seasonal mood changes.
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Depression is one of the most common mental disorders affecting approximately 340 million people in the world. No one is immune from depression - it occurs in people of all social classes, all countries and all cultural settings.
Depression is one of the most common mental disorders affecting approximately 340 million people in the world. No one is immune from depression - it occurs in people of all social classes, all countries and all cultural settings.
The serotonin transporter, a protein that binds to serotonin and clears it from the spaces between brain cells, "is a key element in regulating intensity and spread of the serotonin signal", according to the authors.
During the study, Nicole Praschak-Rieder, M.D., and Matthaeus Willeit, M.D., of the Centre for Addiction and Mental Health and the University of Toronto, Ontario, Canada, and colleagues analysed 88 healthy individuals with an average age 33 between 1999 and 2003.
Circadian Rhythm Sleep Disorders - Types, Causes, Health risks, Diagnosis, Treatment, Prognosis
Circadian rhythm (also known as sleep/wake cycle or the body clock) is a biological process that follows an internal cycle of roughly 24 hours.
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For the analysis, individual scans were grouped according to the season of the scan—fall and winter or spring and summer.
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Low Serotonin Levels Linked to Anger
A new study by researchers at the University of Cambridge has found that low levels of the chemical serotonin are linked to anger in people.
A new study by researchers at the University of Cambridge has found that low levels of the chemical serotonin are linked to anger in people.
When they matched binding potential values to meteorological data, the researchers found that higher values occurred during times when there were fewer hours of sunlight per day.
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Reduced Serotonin Levels Make Women and Men Respond Differently
Scientists have found that women and men respond differently to manipulation of serotonin levels.
Scientists have found that women and men respond differently to manipulation of serotonin levels.
"Higher regional serotonin transporter binding potential values in fall and winter may explain hyposerotonergic [related to low serotonin levels] symptoms, such as lack of energy, fatigue, overeating and increased duration of sleep during the dark season."
"These findings have important implications for understanding seasonal mood change in healthy individuals, vulnerability to seasonal affective disorder and the relationship of light exposure to mood," they conclude.
"This offers a possible explanation for the regular reoccurrence of depressive episodes in fall and winter in some vulnerable individuals," they added.
The findings are reported in Archives of General Psychiatry, one of the JAMA/Archives journals.
Source-ANI
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