Video | Business Headlines | Internet | Science | Scientific Ethics | Technology | Search

 


Birth order influences BMI and insulin sensitivity

Evidence that birth order influences BMI and insulin sensitivity

A study of 50 overweight middle-aged men by researchers at the University of Auckland’s Liggins Institute, suggests that first-borns may be more likely than second-borns to have a greater body-mass index (BMI).

They also found that first-borns had a lower sensitivity to the hormone insulin. Both BMI and lower insulin sensitivity are considered risk factors for type 2 diabetes, hypertension and coronary heart disease.

The research, published in the journal Scientific Reports, adds to our understanding of the potential long-term health effects of birth order, although larger studies that include sibling pairs are needed to fully evaluate this link.

Some evidence suggests that birth order may influence metabolism and body composition, from infancy to early adulthood, but the potential impacts in mid-life have not been explored previously.

The research by Professor Wayne Cutfield and colleagues studied 50 overweight, but otherwise healthy men between the ages of 35 and 55, who were recruited as part of two clinical trials at the Liggins Institute.

They report that first-borns were on average 6.9 kg heavier than second-borns and had a greater BMI. Insulin sensitivity was also 33 percent lower in first-born men than in second-borns, despite adjustment for fat mass.

The research offers a broad assessment of the possible effects of birth order on metabolic health. The authors note, however, that the participant range was rather narrow (overweight males living in a large urban centre), and because sibling pairs were not studied, the study could have underestimated the magnitude of birth order effects on insulin sensitivity and other metabolic outcomes.

BA Albert, M de Bock, JGB Derraik, CM Brennan, JB Biggs, PL Hofman, WS Cutfield, (2014) ‘Among overweight middle-aged men, first-borns have lower insulin sensitivity than second-borns’, Scientific Reports, published 06 Feb 2014 available on-line at http://dx.doi.org/10.1038/srep03906


ENDS

© Scoop Media

 
 
 
 
 
Business Headlines | Sci-Tech Headlines

 

ETS Review: Modelling Documents Released

Three technical documents are being released to help New Zealanders engage with the Emissions Trading Scheme (ETS) review, Climate Change Minister Paula Bennett says. More>>

ALSO:

Northland: Govt Plan Targets Transport, Web, Maori Assets

The government has released a 10-year plan to attract investors and lift economic growth in Northland, a region that perennially underperforms the rest of the country even while being endowed with natural beauty, productive land, minerals, a potential workforce, scope for manufacturing, forestry and aquaculture, and proximity to Auckland. More>>

ALSO:

Statistics: Unemployment Rate Falls To 5.3 Percent

The unemployment rate fell to 5.3 percent in the December 2015 quarter (from 6.0 percent), Statistics New Zealand said today. This is the lowest unemployment rate since March 2009. There were 16,000 fewer people unemployed than in the September ... More>>

ALSO:

Employment: Labour Urges Talley’s To End AFFCO Lockout

Labour has urged Talley’s to resolve the ongoing industrial dispute with AFFCO workers which is having a severe effect on the employees, their families and their communities, Labour’s Workplace Relations spokesperson Iain Lees-Galloway says. More>>

ALSO:

Three Kings: Govt To Oppose Appeal Blocking $1.2B Auckland Housing Plan

Environment Minister Nick Smith and Housing New Zealand have joined legal proceedings in support of Auckland Council and Fletcher Building opposing a bid by community groups to only allow low-rise housing in a $1.2 billion housing redevelopment on the disused site of the Three Kings quarry. More>>

ALSO:

Transport: Jetstar Expands Regional Network With Three New Routes

More New Zealanders than ever before will have access to Jetstar’s affordable flights when new services take off today from Auckland to New Plymouth and Palmerston North, and Nelson to Wellington. More>>

ALSO:

Get More From Scoop

 
 
 
 
 
 
 
 
 
Sci-Tech
Search Scoop  
 
 
Powered by Vodafone
NZ independent news