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  • Keeping Blood pressure...

Keeping Blood pressure under control curbs neurotic behaviours, anxiety, and CVD: BMJ

Written By : Dr. Kamal Kant Kohli Published On 2022-11-22T06:15:16+05:30  |  Updated On 23 Nov 2022 3:44 PM IST
Keeping Blood pressure under control curbs neurotic behaviours, anxiety, and CVD: BMJ
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High blood pressure is one of most common non communicable disease globally. It has target organs including eyes, brain, kidneys and heart and therefore it needs to be controlled to save these vital organs from various complications.

According to a new study, Keeping blood pressure under control can help curb neuroticism, anxiety, and cardiovascular disease. Further diastolic blood pressure-the lower of the two numbers in a blood pressure reading-is highly likely to cause neurotic personality trait.

The research has been published in the open access journal General Psychiatry.

High blood pressure is a major risk for cardiovascular disease and thought to be associated with psychological factors, such as anxiety, depression, and neuroticism-a personality trait characterised by susceptibility to negative emotions, including anxiety and depression.

But which causes which isn't entirely clear.

In a bid to find out, the researchers used a technique called Mendelian randomisation. This uses genetic variants as proxies for a particular risk factor-in this case, blood pressure-to obtain genetic evidence in support of a causal relationship, reducing the biases inherent in observational studies.

Between 30% and 60% of blood pressure is down to genetic factors, and over 1000 genetic single nucleotide polymorphisms, or SNPs for short, are associated with it. SNPs help predict a person's response to certain drugs, susceptibility to environmental factors, and their risk of developing diseases.

The researchers drew on 8 large-scale study datasets containing whole genome DNA extracted from blood samples from people of predominantly European ancestry (genome-wide association studies).

They applied Mendelian randomisation to the 4 traits of blood pressure-systolic blood pressure (736,650 samples), diastolic blood pressure (736,650), pulse pressure (systolic minus diastolic blood pressure; 736,650), and high blood pressure (above 140/90 mm Hg; 463,010) with 4 psychological states-anxiety (463,010 samples), depressive symptoms (180,866), neuroticism (170,911) and subjective wellbeing (298,420).

The analysis revealed that high blood pressure and diastolic blood pressure had significant causal effects on neuroticism, but not on anxiety, depressive symptoms, or subjective wellbeing.

But after adjusting for multiple tests, only diastolic blood pressure was significantly associated with neuroticism (over 90%), based on 1074 SNPs.

The researchers acknowledge certain limitations to their findings. For example, it wasn't possible to completely exclude pleiotropy–where one gene can affect several traits. And the findings may not be more widely applicable beyond people of European ancestry.

But blood pressure links the brain and the heart, and so may promote the development of personality traits, they explain.

"Individuals with neuroticism can be sensitive to the criticism of others, are often self-critical, and easily develop anxiety, anger, worry, hostility, self-consciousness, and depression.

"Neuroticism is viewed as a key causative factor for anxiety and mood disorders. Individuals with neuroticism more frequently experience high mental stress, which can lead to elevated [blood pressure] and cardiovascular diseases," they write.

And they suggest: "Appropriate surveillance and control of blood pressure can be beneficial for the reduction of neuroticism, neuroticism-inducing mood disorders, and cardiovascular diseases."

Reference:

Cai L, Liu Y, He LInvestigating genetic causal relationships between blood pressure and anxiety, depressive symptoms, neuroticism and subjective well-beingGeneral Psychiatry 2022;35:e100877. doi: 10.1136/gpsych-2022-100877

General Psychiatryanxietycardiovascular diseaseblood pressureneurotic behavioursdepressionDiastolic blood pressureneuroticismmental stress
Source : General Psychiatry
Dr. Kamal Kant Kohli
Dr. Kamal Kant Kohli

Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751

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