login
Become a member
Quick Registration
Full Registration Benefits -
Free Homepages for Doctors
Free Homepages for Hospitals
Free Homepages for Medical Conference
Free Homepages for NGO's
Personal Health Record Creation
Access to all Medical Slides
Access to all Jobs & Products Sale
A Small Matter of Height
What's more: Having an older brother may reduce your chances of reproductive success.
Ian Rickard and colleagues at the University of Glasgow in Scotland collected data from 79 students and staff at their university with older siblings.
They found that those born with at least one older brother were on average lighter at birth and also shorter in adulthood than those born with one or more older sisters.
Rickard's team also analyzed birth records from kept by the Lutheran Church in Finland for 653 women between 1709 and 1815 and found that the lifetime reproductive success of those born with an elder sister was 27 percent higher than for those with an elder brother.
By including families in which the older son died before their sibling was born the team was able to determine that reduced reproductive success was not a result of interaction between siblings but due to some other factor.
The researchers suggest that mothers who produce sons perhaps incurred a reproductive cost that could have consequences for future offspring.
"Male fetal testosterone may cross over to the mother and impact her immune function, compromising the weight of future fetuses," New Scientist quoted Rickard, as saying.
"As birth weight and height are associated to health outcomes later in life, this could have potential implications to the long-term health of siblings," he added.
|
|
|
More News on: Ideal Baby Weight, Ideal Body Weight-Adults, Height and weight for children, Height and weight-Adults, Nutritional Assessment, Height and Weight-Kids, Grow Taller, Grow as tall as you want, Does Yoga help you grow Taller
 Comment & Contribute
|
- Health News Index
|
|
- News Quick Links
| News Categories: |
| » | Rock Music at Concerts may Lead to Hearing Problems |
| » | Construction Of 'Intelligent' Robot That Designs Tools on Its Own |
| » | Social Media Helping in Sharing of Information Post Disasters |
| » | 88,000 Racism Incidents Reported in UK Schools Between 2007-2011 |
| » | Expenditure Of 118 Million To Improve Water Quality: Beijing |
| More Life Style News | |
|
