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New French research pubÂlished in the Public Library of Science found that a high intake of monounÂsatÂuÂrated fats from olive oil and other sources may proÂtect against skin aging caused by sun expoÂsure. The study included over 2,900 parÂticÂiÂpants and sugÂgested that olive oil intake was assoÂciÂated with a lower risk of severe skin aging, indiÂcatÂing that a diet rich in monounÂsatÂuÂrated fats may have benÂeÂfiÂcial effects on skin health.

New French research sugÂgests that a high intake of olive oil and other monounÂsatÂuÂrated fats may proÂtect the skin against sun-related aging.
The study, pubÂlished in the Public Library of Science, was designed to build on the hypothÂeÂsis that monounÂsatÂuÂrated fatty acids reduce oxidaÂtive damÂage in the body, in addiÂtion to decreasÂing insulin resisÂtance and inflamÂmaÂtion, all of which may reduce aging of the skin due to sun damÂage or ​‘photo-aging’.
The cross-secÂtional study included 1,264 women and 1,655 men, all between 45 and 60 years old. Dietary intake records where comÂpleted by parÂticÂiÂpants at least ten times in the first two-and-a-half years of folÂlow up, allowÂing intake of monounÂsatÂuÂrated fatty acids from olive oil and other sources to be estiÂmated. Skin photo-aging was then graded by phoÂtographs.
The results obtained in the study sugÂgested that a lower risk of severe photo-aging was assoÂciÂated with higher intakes of monounÂsatÂuÂrated fatty acids from olive oil, as well as from other vegÂetable oils. However, of the most comÂmonly conÂsumed vegÂetaÂbles oils, olive, peanut and sunÂflower, olive oil intake showed the greatÂest assoÂciÂaÂtion with reduced aging, and was the only assoÂciÂaÂtion that was staÂtisÂtiÂcally sigÂnifÂiÂcant.
Although monounÂsatÂuÂrated fats were assoÂciÂated with reduced risk of skin aging overÂall in both sexes, there was no assoÂciÂaÂtion between the monounÂsatÂuÂrated fatty acids found in meat, dairy or processed meats. The reaÂson for this is not clear, as dairy prodÂucts proÂvide simÂiÂlar amounts of monounÂsatÂuÂrated fats as olive oil. However, the authors of the study hypothÂeÂsized that this could be due to the high level of unhealthy satÂuÂrated fats also present in dairy foods, or posÂsiÂbly the polypheÂnols in olive oil, which are thought to proÂtect against cell damÂage.
The authors conÂcluded that the results supÂported the benÂeÂfiÂcial effect of olive oil on the aging of the skin, although admit that as parÂticÂiÂpants who conÂsumed more olive oil also had healthÂier overÂall diets, this may also play a part in the proÂtecÂtive effect. Although the results seem to indiÂcate yet another health benÂeÂfit of a diet rich in olive oil, furÂther invesÂtiÂgaÂtion is needed in this area to deterÂmine the mechÂaÂnism by which monounÂsatÂuÂrated fats or other comÂpounds in olive oil proÂtect against skin aging.
A diet high in olive oil is widely regarded to be benÂeÂfiÂcial for health, with research sugÂgestÂing it proÂvides proÂtecÂtion against a wide range of conÂdiÂtions includÂing heart disÂease, stroke, arthriÂtis and even some forms of canÂcer. Although furÂther research is needed to deterÂmine the exact effect a diet rich in monounÂsatÂuÂrated fatty acids has on the aging process of the skin, there seems litÂtle doubt that olive oil is one of the most benÂeÂfiÂcial fat sources for our health.