Late sleeper? Blame your Genes

Late sleeper? Blame your Genes

Late sleeper Blame your Genes

Are you one of those people who sleep until mid-morning and make your first day’s stride only by late afternoon? All of us have our preferences for late nights and early mornings. Based on scientific studies as an individual where we stand with our preference of being a late sleeper or an early riser depends on our genes.

Some of us are night owls where as some are early risers and there are some of us who fall in between the two. Where a person falls in this range is determined by their individual chronotype.

Chronotype in simple terms means the habit of a person to sleep at a particular time during a 24hour period.
Chronotype of the person depends on many factors such as:
• Work hours
• Type of job – day or night job
• Hobbies
• Life style

Depending on the above mentioned factors, the genes of the individual get used to the Chronotype pattern which is followed.

With the advancement in neuroscience, Scientists who are an expert in chronobiology tracked when people go to sleep on non-working days. The result was that an Average Chronotype person sleeps at 11pm and wakes up at 7am. There were only a few people who fall on the other end of the chart. It was also found that people who are slightly behind the average Chronotype feel jet lagged when they wake up.

Average Chronotype people sleep the same on free days and work days. Chronotype is decided by a master clock within the body which is a bundle of neurons called suprachiasmatic nucleus (SCN) which produce circadian rhythms. Studies have proved that late night sleepers are addicted to smoking and alcohol, hence have high chances of falling into depression.

For a normal Chronotype person, SCN commands the pineal gland to start producing melatonin at around 9pm which makes them sleepy, at around 4.30am, the body attains its lowest temperature and the blood pressure shoots the highest at 6.45am, the person becomes most alert at 10am. For a late chronotype person, all the four processes happen later in the day.

Genetics of each and every individual is different. By changing the SCN of a normal person with that of a late chronotype person does not make him a late riser because SCN is not the only biological clock, there are several little clocks spread everywhere in the body.

There are a few late risers who are lazy compared to the larks’ – early risers, but this is not the case with all the late risers as genetics play a role.early risers, but this is not the case with all the late risers as genetics play a role.

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