Monday, March 18, 2013

Blood and Taxes

Nothing is certain, but blood pressure does increase in the end of  winter and beginning of spring. According to Aurametrix users and google statistics. As a matter of fact, it highly correlates with tax fever - as found by Google Correlate algorithm comparing millions of web queries  - see the figure on the right with searches for property taxes shown in red. Or check it yourself!

But the reason for raising blood pressure is not always taxes. Seasonal variation in blood pressure was noticed and described more than 50 years ago and was connected to periods of decreasing outdoor temperature. It happens to healthy individuals and those who suffer from high blood pressure, especially in the elderly.
The figure shows fluctuations in blood pressure observed by French researchers in a large study of 9294 65+ old residents of Bordeaux, Dijon, and Montpellier. Both systolic and diastolic parts of blood pressure as well as heart rate measurements significantly differed across the seasons with a clear trend for increase in colder months. And decreases following warmer weather - the higher the temperature, the larger the blood pressure decreases. Changes in blood pressure relative to outdoor temperature were largest in the elderly (80+ years old).  On average, for a 15°C decrease in outdoor temperature, Systolic blood pressure (SBP) increased 0.8 mm Hg in those aged 65 to 74 years compared with 5.1 mm Hg in the oldest group (≥80 years). For a 15°C increase in temperature, SBP decreased 9.9 mm Hg in the youngest group vs 13.8 mm Hg in those 80 years or older. Winter increases in blood pressure did not seem to be caused by increased alcohol consumption and decreased activity. Neither were they dependent on the indoor temperatures - spending over 12 hours in warm rooms did not help.

The inverse correlation of blood pressure and outdoor temperature is even stronger for "apparent temperature"- aka the perceived coldness derived from the combination of temperature and wind. And it was observed all over the world - as documented in studies performed in US, Denmark, China, Japan... Possible explanations include direct thermoregulation-mediated vasoconstriction, hypothalamic-pituitary-adrenocortical axis (HPAA) and sympathetic nervous system (SNS) activation, sodium/volume retention and impaired endothelial-dependent vasodilatation.  Reduced sleep duration or quality could be also contributing.

Environmental hypertensionology is a very young science. Many things in our environment can cause high blood pressure. The exact mechanisms are not well understood, but systems like Aurametrix could utilize the wealth of empirical evidence and use it for prediction and prevention.

The high blood pressure season is almost over. Fortunately, many critically ill people made it through and, hopefully, learned more. Let's gear up to make the next time easier.

=======================================================================

REFERENCES

Alpérovitch, A. (2009). Relationship Between Blood Pressure and Outdoor Temperature in a Large Sample of Elderly IndividualsThe Three-City Study Archives of Internal Medicine, 169 (1) DOI: 10.1001/archinternmed.2008.512

Halonen, J., Zanobetti, A., Sparrow, D., Vokonas, P., & Schwartz, J. (2010). Relationship between outdoor temperature and blood pressure Occupational and Environmental Medicine, 68 (4), 296-301 DOI: 10.1136/oem.2010.056507

Brook RD, Weder AB, & Rajagopalan S (2011). "Environmental hypertensionology" the effects of environmental factors on blood pressure in clinical practice and research. Journal of clinical hypertension (Greenwich, Conn.), 13 (11), 836-42 PMID: 22051429

29 comments:

  1. As far back as concrete began, it has known to hints at staining and pulls in stains. Notwithstanding, with the appearance of innovation, valuable strategies have been created to help concrete cleaning service in indianapolis reestablish its unique shading however much as could be expected.

    ReplyDelete
  2. Your article helped me a lot in absorbing all the statistical information about environmental health. I really liked your article. keep sharing more of such good information.

    ReplyDelete
  3. Numerous things in our condition can cause hypertension. Buy Viagra Gold http://www.menstwilight.com/viagra-gold.html

    ReplyDelete
  4. Hair's quality and versatility is worked by supplements, minerals. also, vitamins and when there are shortages, hair can endure significantly more.موقع هير

    ReplyDelete
  5. Consisting of a texture similar to body lotion, hRemoval Cream For Private Parts are applied directly to the skin in the area of unwanted hair growth and are then wiped away only moments later

    ReplyDelete
  6. Now and then, eating can be a troublesome errand in the event that you are experiencing medicines for bosom tumor. Medical procedure, chemotherapy, radiation, and drugs can antagonistically influence your hunger and stomach related framework. original site

    ReplyDelete
  7. Your weight is measured under water. Your weight in water depends on the amount of fat in your body hand strengthener

    ReplyDelete
  8. Both systolic and diastolic parts of blood pressure as well as heart rate measurements significantly differed across the seasons with a clear trend for increase in colder months.https://www.garciniacambogiareviewed.co/brands/purefit-keto/

    ReplyDelete
  9. Offering a Comfortable Shirdi tour packages, we ensure that all our Guest have a hassle free trip Sarting the tour by 8 to 8.30 AM from Pune Airport , we transfer you by AC Pushback bus to a most comfortable and relaxing stay in Shirdi 3 Star or Deluxe hotel, making your wait to have darshan of baba come true with visit to Sai baba's Shrine you can also visit Dwarkami the most important place to visit in shirdi dwarkamai is where baba stayed till the end of his life . The tour package also takes you to the unique and the most powerful Shani temple in India - Shanishingnapur, & Ranjangaon Ashtavinay Temple one of the eight Swayambhu Ganpathi temple located near Pune. At Shirdi Sai Holidays, we provide Shirdi Package with personal interest in providing quality customer service and making sure your travel experience is both enjoyable and rewarding. Here we give you the opportunity to discuss in comfort all aspects of your travel arrangements with our consultants and managers. Take the opportunity to speak to any one of our friendly and knowledgeable consultants. We deal exclusively with Bangalore to Shirdi Package by bus and flight. Those who register online will not have to stand in the darshan queue for more than an hour. They will be told the approximate time when they can pay their respect and will be able to finish their visit within an hour of the time mentioned. Those who do not book through this Booking System will have to stand in the regular darshan queue. Devotees can also make Online bookings for Hotel Accommodation at Shirdi. The Dwarawati hotel is used for the Accomodation purpose. Previously, devotees had to stand in queue for getting the accommodation tickets. But with the help of present system, they can book their accomodation at Dwarawati before time at an affordable rate starting from Rs. 500.
    Those devotees, who want to attend the Artis of Baba at the Samadhi Mandir, can also reserve before time with the help of the Online booking system. For more information and Online Booking, go to this link https://online.sai.org.in/. Devotees need to be first register themselves in the Website and create an Account, after that they can select the Online services like Darshan, Accomodation, Donation, Annadan etc and make their payments online through the appropriate payment gateways.

    ReplyDelete
  10. Thanks for sharing this information with us, your website is really awesome. kinguser update poweramp apk full version leo playcard android

    ReplyDelete
  11. Even though it might not seem so important as first, you should keep in mind that only by selecting the best office furniture such as a suitable ergonomic office chair, will you be able to create a space where everyone feels comfortable and ready to put in their best work.

    https://presshereandnow.livejournal.com/2301501.html

    ReplyDelete
  12. Online betting has become a popular pastime amongst sports enthusiasts who want to have some fun. Thanks to the multitude of exciting offers and promotions, bettors can enjoy an amazing experience without spending too much money. For instance, if you are new to betting, you should take advantage of the coral free bet. The attractive coral sign up offer gives you the chance to get 3 x €10 in free bets upon settlement of your first stake.

    http://sarah-blog.over-blog.com/2019/07/take-advantage-of-the-exciting-coral-sign-up-offer.html

    ReplyDelete
  13. In the context of the unprecedented evolution of the online universe, traditional betting has gradually been replaced by its online counterpart, which has become extremely popular amongst punters of all ages. Online punters are attracted by the exciting free bets which add value to their betting experience and increase their chances of making profit, such as the betway free bet and the ladbrokes free bet. If you are new to betting on the Internet, free bets are an opportunity you should definitely take advantage of.

    http://sarah-blog.over-blog.com/2019/08/impressive-betway-free-bet.html

    ReplyDelete
  14. Learning more about copyright in the music industry will help avoid tons of problems later on. It would also be great to include the basics of copyright laws in the teaching program at school.

    if you want more just look here "human rights assignments"

    ReplyDelete
  15. When you have a store, there are all sorts of interesting items that you can sell. But, have you thought about selling wooden flowers? Investing in wood flowers wholesale will certainly prove to be a smart decision because they will fly off the rack. They are beautiful and can be personalized according to anyone’s preferences.

    http://sarahaddyson.over-blog.com/2019/09/investing-in-wood-flowers-wholesale-for-your-shop.html

    ReplyDelete
  16. A draining diathesis, critical enough to affect the medical procedure, can be for the most part gotten in the patient's history; anyway prescriptions frequently go under the radar and ought to be requested explicitly. Patient'scheck over here

    ReplyDelete
  17. Do you have second thoughts as to whether or not you should join a credit union? What do you know about oregon credit union and the available services? We should start by saying that banks in portland oregon are not your only option when you need financial services. The more you learn about credit unions and what they have to offer to their members the more eager you will be to become a member.

    http://sarah-blog.over-blog.com/2019/09/credit-union-or-banks-in-portland-oregon.html

    ReplyDelete
  18. Sola wood, or shola wood as it is known in Asia, is one of the most light and most malleable types of woods out there. Indian cork, as many refer to it, is milky-white and very sponge-like to the touch. The material is so soft that it comes in rolls that you can buy at almost any hobby store. And it is that malleability and abundance of it that has made it one of the most commonly used materials in many industries around the world. Being an indigenous plant to the deep-water marshy regions of Asia, the main use for the wood was making ceremonial sculptures and other artistic objects such as wooden wedding flowers used by couples during their wedding ceremonies in Bengal and other countries in the area.

    https://abbyclare.livejournal.com/548.html

    ReplyDelete
  19. Hi! Nice work. What an outstanding post. I really like your work. You just nailed it my friend.
    Visit us for printing id cards online

    ReplyDelete
  20. We provide top reviews of the latest shower filters ,Water filters and top shower heads. See Our website for top quality shower information .

    if you want more just look here "top quality high pressure shower head"

    ReplyDelete
  21. While its unrefined leaves can be chomped, foamed, or immersed with tea, dried to smoke, or its concentrates, dried, changed into a powder and crushed into holders or tablets to get many amazing

    if you want more just look here "Kratom"

    ReplyDelete

  22. Wow, awesome blog layout! How long have you been blogging for?
    you made blogging look easy. The overall look of your
    site is magnificent, let alone the content!

    my web page :: 강남안마

    (freaky)

    ReplyDelete
  23. Thanks for sharing these latest news updates. check outRTPSservice launched by Bihar to provide services for creating caste, residence, OBC certificate, land possession certificate (LPC), Character certificate, tatkal services, income, and residential certificates online.

    ReplyDelete

Note: Only a member of this blog may post a comment.