Lack of Sleep Can Cause Heart Failure!!!

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This article comes from an email I received in my inbox this morning. It was written and shared by a Professor in my faculty who is very much concern about both health and work (like me). Credit to Prof. Ramlan Aziz for this good email. After reading this article, I told myself that I need to have longer sleeping time starting from tonight. After reading this, I think you will agree.

Please, read the article ok…

Don’t ignore yr good sleep-Ranjan Das, CEO and MD of SAP Indian subcontinent died after a massive cardiac arrest in Mumbai. One of the youngest CEOs, he was 42.

What killed Ranjan Das and Lessons for Corporate India?

A month ago, many of us heard about the sad demise of Ranjan Das from Bandra, Mumbai. He was very active in sports, was a fitness freak and a marathon runner. It was common to see him run on Bandra’s Carter Road . Just after Diwali, on 21st Oct last year, he returned home from his gym after a workout, collapsed with a massive heart attack and died.

enoughsleepIt was certainly a wake-up call for corporate India . However, it was even more disastrous for runners amongst us. Since Ranjan was an avid marathoner ( in Feb 09, he ran Chennai Marathon at the same time some of us were running Pondicherry Marathon 180 km away ), the question came as to why an exceptionally active, athletic person succumb to heart attack at 42 years of age.

Was it the stress?

A couple of you called me asking about the reasons.. While Ranjan had mentioned that he faced a lot of stress, that is a common element in most of our lives. We used to think that by being fit, one can conquer the bad effects of stress. So I doubted if the cause was stress.
It was certainly a wake-up call for corporate India . However, it was even more disastrous for runners amongst us. Since Ranjan was an avid marathoner ( in Feb 09, he ran Chennai Marathon at the same time some of us were running Pondicherry Marathon 180 km away ), the question came as to why an exceptionally active, athletic person succumb to heart attack at 42 years of age.

The Real Reason

However, everyone missed out a small line in the reports that Ranjan used to make do with 4-5 hours of sleep. This is an earlier interview of Ranjan on NDTV in the program ‘Boss’ D! ay Out’: Boss’ Day Out: RanjanDas of SAP India .

The Evidence

Last week, I was working with a well-known cardiologist on the subject of ‘Heart Disease caused by Lack of Sleep’. ! While I cannot share the video nor the slides because of confidentiality reasons, I have distilled the key points below in the hope it will save some of our lives.

Some Excerpts:

· Short sleep duration ( <5 or 5-6 hours ) increased risk for high BP by 350% to 500% compared to those who slept longer than 6 hours per night. Paper published in 2009. As you know, high BP kills.

· Young people ( 25-49 years of age ) are twice as likely to get high BP if they sleep less. Paper published in 2006.

· Individuals who slept less than 5 hours a night had a 3-fold increased risk of heart attacks. Paper published in 1999.

· Complete and partial lack of sleep increased the blood concentrations of High sensitivity C-Reactive Protein (hs-cRP), the strongest predictor of heart attacks. Even after getting adequate sleep later, the levels stayed high!

· Just one night of sleep loss increases very toxic substances in body such as Interleukin-6 (IL! -6), Tumour Necrosis Factor-Alpha (TNF-alpha) and C-reactive protein (cRP). They increase risks of many medical conditions, including cancer, arthritis and heart disease. Paper published in 2004.

· Sleeping for <=5 hours per night leads to 39% increase in heart disease. Sleeping for <=6 hours per night leads to 18% increase in heart disease. Paper published in 2006.

Ideal Sleep

For lack of space, I cannot explain here the ideal sleep architecture. But in brief, sleep is composed of two stages: REM ( Rapid Eye Movement ) and non-REM. The former helps in mental consolidation while the latter helps in physical repair and rebuilding. During the night, you alternate between REM and non-REM stages 4-5 times.

The earlier part of sleep is mostly non-REM. During that period, your pituitary gland releases growth hormones that repair your body. The latter part of sleep is more and more REM type.

For you to be mentally alert during the day, ! the latter part of sleep is more important. No wonder when you wake up with an alarm clock after 5-6 hours of sleep, you are mentally irritable throughout the day (lack of REM sleep). And if you have slept for less than 5 hours, your body is in a complete physical mess ( lack of non-REM sleep ), you are tired throughout the day, moving like a zombie and your immunity is way down ( I’ve been there, done that ).

Finally, as long-distance runners, you need an hour of extra sleep to repair the running related damage.


Barring stress control, Ranjan Das did everything right: eating proper food, exercising ( marathoning! ), maintaining proper weight. But he missed getting proper and adequate sleep, minimum 7 hours. In my opinion, that killed him.
If you are not getting enough sleep ( 7 hours ), you are play(!)ing with fire, even if you have low stress.

I always took pride in my ability to work 50 hours at a stretch whenever the situation warranted. But I was so spooked after seeing the scientific evidence last week that since Saturday night, I ensure I do not even set the alarm clock under 7 hours. Now, that is a nice excuse to get some more sleep.

Unfortunately, Ranjan Das is not alone when it comes to missing sleep. Many of us are doing exactly the same, perhaps out of ignorance. Please forward this mail/article to as many of your colleagues/friends as possible, especially those who might be short-changing their sleep. If only we can save even one young life because of this email??? !!!

Being a Muslim, our biological clock follows the time of prayers. That 7 hours of sleep mentioned may not be true. But what we need is quality sleep. Also not to take heavy meals about 3 hours before sleep so that the growth hormones are in optimum environment to repair our body.

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11 Responses

  1. Farish Ishak says:

    kadang2 aku pun tidur dalam 5-6 jam gak.. huhu.. bahaya nih..

  2. titan says:

    bahaya gak keadaan aku nih..tido tak pernahnya cukup..

  3. cyza says:

    That’s why. Aku pun tak tau before this. Dah tau, aku bantai tidur siang…huhu

  4. cyza says:

    So, lepas ni kena lebih kan tidur la ye…

  5. samdaddycool says:

    scary fact.. I should reorganize my life and my sleep pattern.

  6. noriz says:

    iskhhh, menakutkan ek…

    ada ‘alasan’ lah bapak2 nak tido lama pasni kan… hehehe

    but it’s true, klu tido tak cukup mmg produktiviti pun terjejas dan boleh plak sebabkan sakit jantung…huhu, tu yg ramai mati muda ek…. kan semalam ada pemain bola itali pun baru meninggal di padang bola…wlu masih muda dan body fit tpi dalaman sapa yg tahu kan…

  7. Farish Ishak says:

    yang tu memang terbaik~ aku pun slalu gak bantai tidur siang

  8. titan says:

    susah weh..memang susah aku nak cukup tdo sekarang nih..banyak kerja maa..

  9. cyza says:

    Yep…not only u…me too…

  10. cyza says:

    Ye…la ni, dah kena adjust jadual…so, at 10.30-11.00 pm dah start tido…pasai nak kena bangun awal…

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