Why mental health disorders are becoming more common
*Living alone, adverse events during first years of life, lack of religious experience increase future disorder risk
A new study has concluded that living alone is linked to common mental disorders. The authors have also identified the main driver of this worrying relationship.
Some common mental disorders (CMDs) include mood disorders, anxiety, and substance use disorders.
According to some studies, almost one-third of people will experience a CMD in their lifetime.
These conditions can have a significant impact on the individual, of course, but due to their high prevalence, they also affect society at large. Due to the widespread influence of CMDs, scientists are keen to understand the full range of risk factors that feed into mental health.
In recent years, scientists have investigated whether living alone might be one such risk factor.
A new study, the results of which now appear in the journal PLOS ONE, takes a fresh look at this question. The study authors conclude that there is a link between living alone and CMDs. They also find that it affects all age groups and sexes, and that primarily, loneliness is the driver.
The number of people living alone is steadily growing throughout much of the Western world; this is due to a number of reasons, including the aging population, people tending to get married at an older age, and increased divorce rates.
Researchers have already looked at the relationship between CMDs and living alone, but most have focused on older adults, so their findings may not apply to other age groups.
A recent study has confirmed that loneliness is linked to a higher risk of developing dementia.
Also, a Massachusetts General Hospital (MGH), United States, study has found evidence that children under three years old are most the vulnerable to the effects of adversity – experiences including poverty, family and financial instability, and abuse – on their epigenetic profiles, chemical tags that alter gene expression and may have consequences for future mental health. Their report appearing in the May 15 issue of Biological Psychiatry, which has been published online, finds that the timing of adverse experiences has more powerful effects than the number of such experiences or whether they took place recently.
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