Women who take probiotics during their first trimester of pregnancy may be less likely to suffer from the most unhealthy form of obesity after giving birth, according to research.
Probiotics are bacteria that help to maintain a bacterial balance in the digestive tract by reducing the growth of harmful bacteria. They are part of the normal digestive system and play a role in controlling inflammation.
Kirsi Laitinen, a nutritionist and senior lecturer at the University of Turku, said that the results of the study, presented today at the European Congress on Obesity, were an encouraging sign of the impact of a diet supplemented with probiotics on adiposity. Adiposity, or central obesity, is a particularly unhealthy form of obesity associated with fat bellies.
“The women who got the probiotics fared best,” she said. “One year after childbirth, they had the lowest levels of central obesity as well as the lowest body fat percentage.
“We found [adiposity] in 25 per cent of the women who had received the probiotics along with dietary counselling, compared with 43 per cent of the women who received diet advice alone.”
In the study, 256 women were randomly divided into three groups during the first trimester of pregnancy.
Two of the groups received dietary counselling consistent with what is recommended during pregnancy for healthy weight gain and optimal foetal development. They were also given food such as spreads and salad dressings with monounsaturated and polyunsaturated fatty acids, as well as fibre-enriched pasta and breakfast cereal to take home.
One of those groups also received daily capsules of probiotics containing Lactobacillus and Bifidobacterium, which are the most commonly used probiotics. The other group received dummy capsules.
A third group received dummy capsules and no dietary counselling. The capsules were continued until the women stopped exclusive breastfeeding, after up to six months.
The researchers weighed the women at the start of the study. At the end of the study they weighed them again and measured their waist circumference and skin fold thickness.
Central obesity — defined as a body mass index (BMI) of 30 or more or a waist circumference over 80 centimetres — was found in 25 per cent of the women who had been given the probiotics as well as diet advice.
That compared with 43 per cent of the women who got dietary counselling alone and 40 per cent of the women who got neither diet advice nor probiotics.
One of the limitations of the study was that it did not take into account the mothers’ weight before pregnancy, which may influence how fat they later become.
Laitinen said that she and her colleagues would continue to follow the women and their babies to see whether giving probiotics during pregnancy had any influence on the health of the women’s children.
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