Featured Research

from universities, journals, and other organizations

Month Of Birth Linked To Risk Of Multiple Sclerosis

Date:
December 8, 2004
Source:
British Medical Journal
Summary:
In the northern hemisphere, being born in May is linked to an increased risk of developing multiple sclerosis later in life, while being born in November carries the lowest risk, finds a new study published on bmj.com.

December 6, 2004 -- In the northern hemisphere, being born in May is linked to an increased risk of developing multiple sclerosis later in life, while being born in November carries the lowest risk, finds a new study published on bmj.com today.

Related Articles


The researchers suspect that complex interactions between genes and the environment before or shortly after birth may help to explain this link.

Their study involved 17,874 Canadian patients and 11,502 British patients with multiple sclerosis. Data on month of birth, along with detailed information on demographics and medical and family history, were collected and analysed. The comparison groups were both from the general population and from the unaffected brothers and sisters of those with MS.

In Canada, significantly fewer people with MS were born in November compared with controls. Similarly in Britain, fewer people with MS had been born in November and significantly more had been born in May. The number born in December was also significantly lower.

Adding Danish and Swedish samples to the Canadian and British results (over 42,000 people) showed a 13% increase in risk of MS for those born in May compared with November and a 19% decreased risk for those born in November compared with May.

The effect was most evident in Scotland, where the prevalence of MS is the highest.

These findings conclusively show the association between month of birth and risk of MS in northern countries, but the explanation remains unclear, say the authors.

Previous studies have suggested that exposure to the sun or seasonal variations in a mother's vitamin D levels during pregnancy may have an impact on brain development.

These findings support suggestions that environmental factors both before and immediately after birth may influence the development of the nervous or immune systems and therefore determine the risk for this disease in adult life, they conclude.


Story Source:

The above story is based on materials provided by British Medical Journal. Note: Materials may be edited for content and length.


Cite This Page:

British Medical Journal. "Month Of Birth Linked To Risk Of Multiple Sclerosis." ScienceDaily. ScienceDaily, 8 December 2004. <www.sciencedaily.com/releases/2004/12/041208094008.htm>.
British Medical Journal. (2004, December 8). Month Of Birth Linked To Risk Of Multiple Sclerosis. ScienceDaily. Retrieved December 21, 2014 from www.sciencedaily.com/releases/2004/12/041208094008.htm
British Medical Journal. "Month Of Birth Linked To Risk Of Multiple Sclerosis." ScienceDaily. www.sciencedaily.com/releases/2004/12/041208094008.htm (accessed December 21, 2014).

Share This


More From ScienceDaily



More Health & Medicine News

Sunday, December 21, 2014

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

The Best Tips to Curb Holiday Carbs

The Best Tips to Curb Holiday Carbs

Buzz60 (Dec. 19, 2014) It's hard to resist those delicious but fattening carbs we all crave during the winter months, but there are some ways to stay satisfied without consuming the extra calories. Vanessa Freeman (@VanessaFreeTV) has the details. Video provided by Buzz60
Powered by NewsLook.com
Sierra Leone Bikers Spread the Message to Fight Ebola

Sierra Leone Bikers Spread the Message to Fight Ebola

AFP (Dec. 19, 2014) More than 100 motorcyclists hit the road to spread awareness messages about Ebola. Nearly 7,000 people have now died from the virus, almost all of them in west Africa, according to the World Health Organization. Video provided by AFP
Powered by NewsLook.com
Researchers Test Colombian Village With High Alzheimer's Rates

Researchers Test Colombian Village With High Alzheimer's Rates

AFP (Dec. 19, 2014) In Yarumal, a village in N. Colombia, Alzheimer's has ravaged a disproportionately large number of families. A genetic "curse" that may pave the way for research on how to treat the disease that claims a new victim every four seconds. Duration: 02:42 Video provided by AFP
Powered by NewsLook.com
The Best Protein-Filled Foods to Energize You for the New Year

The Best Protein-Filled Foods to Energize You for the New Year

Buzz60 (Dec. 19, 2014) The new year is coming and nothing will energize you more for 2015 than protein-filled foods. Fitness and nutrition expert John Basedow (@JohnBasedow) gives his favorite high protein foods that will help you build muscle, lose fat and have endless energy. Video provided by Buzz60
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Health & Medicine

Mind & Brain

Living & Well

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins