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Health
A new study from the Harvard School of Public Health found a posÂiÂtive assoÂciÂaÂtion between monounÂsatÂuÂrated fat intake, mainly found in olive oil, and higher odds of live birth in women underÂgoÂing IVF. The study also showed negÂaÂtive effects of high intake of satÂuÂrated and polyunÂsatÂuÂrated fats on ferÂtilÂity outÂcomes, sugÂgestÂing the imporÂtance of furÂther research before makÂing strong recÂomÂmenÂdaÂtions on fat intake for women underÂgoÂing inferÂtilÂity treatÂment.

While research has shown that the conÂsumpÂtion of olive oil proÂtects from varÂiÂous chronic disÂeases, a new study from the Harvard School of Public Health has found a posÂiÂtive assoÂciÂaÂtion assoÂciÂaÂtion between good fats and posÂiÂtive outÂcomes in women havÂing In Vitro Fertilization (IVF).
Dietary fat intake has been preÂviÂously assoÂciÂated with reproÂducÂtive health, for examÂple, a high intake of trans-fats has been assoÂciÂated with ovuÂlaÂtory inferÂtilÂity and misÂcarÂriage, while satÂuÂrated fats have been related to lower sperm conÂcenÂtraÂtions. But there is litÂtle inforÂmaÂtion about the effect of dietary fat durÂing ferÂtilÂity treatÂment.
This study invesÂtiÂgated the effect of dietary fat in women havÂing IVF. The study was preÂsented this week at the annual meetÂing of ESHRE (European Society of Human Reproduction and Embryology) by Dr Jorge Chavarro, Assistant Professor of Nutrition and Epidemiology at Harvard School of Public Health.
The researchers invesÂtiÂgated intakes of total fat but also satÂuÂrated fat, polyunÂsatÂuÂrated fat, monounÂsatÂuÂrated fat as well as omega‑6, omega‑3 and trans fats. The results of the analyÂsis showed that higher intakes of monounÂsatÂuÂrated fat, the main fat found in olive oil, were related to higher odds of live birth. The odds of a live birth after embryo transÂfer was 3.45 times higher for women who had the highÂest intake of monounÂsatÂuÂrated fat comÂpared to those with the lowÂest intake.
Women with higher intakes of total fat had fewer metaphase II (MII) oocytes (only MII oocytes can be used for IVF) retrieved than women with lower intakes, this assoÂciÂaÂtion appears to be driÂven by satÂuÂrated fat intake accordÂing to Professor Chavarro. Polyunsaturated fat also had a negÂaÂtive effect. Women conÂsumÂing the most polyunÂsatÂuÂrated fat had a higher proÂporÂtion of poor qualÂity embryos.
Professor Chavarro noted that it is imporÂtant that the results are repliÂcated in other studÂies before makÂing strong recÂomÂmenÂdaÂtions about fat intake to women havÂing inferÂtilÂity treatÂment. However, olive oil, one of the best sources of monounÂsatÂuÂrated fats has been proven to be benÂeÂfiÂcial in genÂeral and it is recÂomÂmended to anyÂbody includÂing woman underÂgoÂing IVF to include olive oil in their diet.