HOME >> MEDICINE >> NEWS
Sex at birth linked to latitude

In Europe, significantly more boys are born in southern countries than in northern latitudes, whereas the reverse is found in North America. Yet the reasons for this remain a mystery, according to a study in this weeks BMJ.

Using data from the World Health Organisation, researchers in Malta analysed and compared the male to female ratio in Europe and North America over 50 years.

Europe was banded by latitude into Southern countries, Central Europe, and Nordic countries. The North American continent was divided by latitude into Canada, the United States, and Mexico.

They found that significantly more boys were born in southern countries, such as Greece, Italy, and Spain than in central Europe or the Nordic countries. In contrast, a low male to female ratio was found in Mexico, a higher ratio in the United States, and an even higher ratio in Canada.

The authors are unable to explain these findings, but stress that a temperature related effect cannot account for the differences.


'"/>

Contact: Emma Wilkinson
ewilkinson@bmj.com
44-207-383-6529
BMJ-British Medical Journal
25-Apr-2002


Page: 1

Related medicine news :

1. NYU College of Dentistry study equates poor oral health with preterm birth risk
2. New studies show mixed results on epilepsy drugs and birth defects
3. Sunflower seed oil can protect low birth weight babies from infection
4. Daily supplement may boost birthweight of babies in the developing world
5. Folic acid recommendations have had little impact on birth defects
6. Progesterone therapy could prevent thousands of preterm births
7. Holidays, birthdays and postponement of cancer deaths
8. Safety of childbirth after C-section examined
9. Month of birth linked to risk of MS
10. Infection puts extremely low birth weight infants at risk for developmental delays
11. Infections in low-birth-weight infants are associated with impaired neurodevelopment and growth

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:9/7/2018)... ... September 07, 2018 , ... Modere, a ... a presence worldwide, today announced that its Chief Executive Officer, Asma Ishaq, has ... Ishaq will be presented the award on Friday, September 7, at the Rice ...
(Date:9/2/2018)... ... September 01, 2018 , ... ... MD® Elite to its leading menu of results-driven aesthetic treatments. HydraFacial is ... infusion of clinically-proven ingredients to dramatically improve your skin’s tone and texture ...
(Date:9/1/2018)... ... 01, 2018 , ... September is Animal Pain Awareness Month, ... (IVAPM) that aims to encourage pain management for all animals through education and ... pet owners of the many forms of pain and the importance of pain ...
(Date:8/31/2018)... ... August 31, 2018 , ... The ... Heart Association (AHA) to be responsive for procurement purposes. , A 100 million ... now reap the benefits. Companies like Pacific Medical Training are already offering VA ...
(Date:8/31/2018)... ... August 31, 2018 , ... ZPower, the world’s only developer ... to Chief Information Officer. Arneja previously served as Director of Information Systems and ... protect, optimize, scale, and innovate the business. , Prior to joining ZPower, ...
Breaking Medicine News(10 mins):
(Date:9/13/2018)... NEW YORK (PRWEB) , ... September 13, 2018 ... ... Validation Suite is now available to test and ensure correct implementation of ... timeline. NCPDP’s SCRIPT Version 2017071 includes important functionality and transactions identified by the ...
(Date:9/12/2018)... , ... September 12, 2018 , ... ... Revenue Cycle Conference in Chicago, IL, from September 19-22. The IT + Revenue ... of patient engagement and empowerment with the use of Precision Virtual Reality™ medical ...
(Date:9/7/2018)... ... 06, 2018 , ... This year, the California Society of Plastic Surgeons (CSPS) ... IDEAL IMPLANT® - Seven-Year Clinical Trial Results at the 68th CSPS Annual Meeting. ... ASPS (American Society of Plastic Surgeons) meeting in Chicago this fall. , “I am ...
Breaking Medicine Technology:
Cached News: