Overweight or obese women give birth to larger babies, says new research which could make some pregnant women think twice before reaching for that box of ice cream.
Mothers with high blood sugar or diabetes, even within a healthy range, also tend to have bigger babies, according to a study published Tuesday in the Journal of the American Medical Association.
Conversely, having higher blood pressure during pregnancy causes women to deliver smaller babies, researchers at the British universities of Bristol and Exeter, who led the study, found.
"Being born very large or very small can carry health risks for a newborn baby, particularly when that's at the extreme end of the spectrum," said Rachel Freathy of the University of Exeter Medical School, who co-wrote the report.
Understanding which characteristics of mothers influence birth weights may help reduce the number of babies born too large or too small, she added.
The researchers examined data from more than 30,000 healthy women and their babies across 18 studies.
All the women had European ancestry and lived in Europe, North America or Australia. They gave birth between 1929 and 2013.
The researchers examined genetic variants associated with womens’ body mass index, blood glucose and lipid levels and blood pressure, together with measurements of those characteristics during pregnancy and babies' birth weights.
A four-point higher body mass index (BMI) for mothers results in a 1.9 ounce (54 grams) higher birth weight for babies, the study found.
Researchers also determined ratios for correlations between higher glucose levels in mothers' blood and higher birth weights, as well as higher blood pressure in mothers and lower birth weights.
"The estimated associations between these maternal traits and birth weight (either increased or reduced) are substantial and of clinical importance," the authors wrote.
"They support efforts to maintain healthy gestational glucose and blood pressure levels to ensure healthy fetal growth."
The researchers also found that lipids, or fat levels, in mothers' blood do not appear to affect baby sizes, contrary to the findings of some previous studies.
AFP
Wed Mar 16 2016
The researchers examined data from more than 30,000 healthy women and their babies across 18 studies.
Putin says Russia willing to seek compromises between Iran and Israel
Russia is ready to help seek compromises between arch-foes Israel and Iran, President Vladimir Putin said on Friday, saying these would be difficult but possible.
Indonesia's free meals plan in the spotlight as Prabowo readies for office
Prabowo calls the programme one of the main drivers of economic growth, eventually set to add an estimated 2.5 million jobs.
Astro AWANI's revamped English news website, AWANI International, launches on Oct 21
Astro AWANI's revamped English platform delivers in-depth global news and expert analysis to keep you informed on key developments.
Israeli strikes kill 33 people in Jabalia refugee camp in Gaza, medics say
Residents of Jabalia said Israeli tanks had reached the heart of the camp after pushing through suburbs and residential districts.
Liam Payne's ex-partner calls for media restraint after 'painful' death
Cheryl Tweedy used her statement to urge the media to remember they had a seven-year-old son, Bear, who could read the reports.
Analysts: Indonesia's strong MoF leadership team to boost investor confidence
Sri Mulyani Indrawati as head of Indonesia's Ministry of Finance is expected to instil confidence among investors.
Biden offers both a carrot and a stick to Israel as his term nears an end
Israel has frequently resisted US advice and has caused political difficulties for the Biden administration.
Putin says BRICS will generate most of global economic growth
Russian President Vladimir Putin will host a summit of the group in the city of Kazan on Oct. 22-24.
ISIS Malaysia's perspective of Budget 2025
An excellent rakyat-centric budget under the overarching principle of a caring and humane economy.
Budget 2025: Record increase in STR, SARA aid initiatives
The government will provide a significant boost to the Sumbangan Tunai Rahmah (STR) and Sumbangan Asas Rahmah (SARA) initiatives next year.
Budget 2025: EPF contributions to be made mandatory for foreign workers – PM Anwar
The government plans to make it compulsory for all non-citizen workers to contribute to the Employees Provident Fund (EPF).
What policies to expect from Indonesia's new President Prabowo
Prabowo will be open to foreign investment, his aide has said, such as by offering investors management of airports and sea ports.
Budget 2025: Govt allocates RM470 mil to empower women's participation in PMKS
The Women's Leadership Apprenticeship Program will be intensified as an effort to produce more female corporate personalities.
Israel sends more troops into north Gaza, deepens raid
Residents of Jabalia in northern Gaza said Israeli tanks had reached the heart of the camp, using heavy air and ground fire.
Indonesia ramps up security ahead of Prabowo's inauguration
Prabowo Subianto will be sworn in as Indonesia's president on Sunday with Vice President-elect, Gibran Rakabuming Raka, also taking office.
Immediate allocation of RM150 mil for local authorities, DID to tackle flash floods
Datuk Seri Anwar Ibrahim said this allocation is intended to address the recent flash floods that hit the capital and several major towns.
Budget 2025: Sabah, Sarawak to continue receiving among highest allocations - PM
Sabah and Sarawak continues to be prioritised under Budget 2025, with allocations of RM6.7 billion and RM5.9 billion respectively.
NFOF will be operational in November 2024 with funding of RM1 bil
PM Anwar Ibrahim said NFOF will support venture capital fund managers to invest in startup companies with RM300 million set aside for 2025.
Minimum wage to increase to RM1,700 effective Feb 1, 2025
The Progressive Wage Policy would be fully enforced next year with an allocation of RM200 million, benefiting 50,000 workers.
Bursa Malaysia ends higher on Budget 2025 optimism
The benchmark index, which opened 1.85 points higher at 1,643.29, moved between 1,641.71 and 1,649.31 throughout the trading session.