Seed oils are bet­ter for choles­terol than olive oil

Daily Messenger - - National -

IS­LAM­ABAD: An anal­y­sis of data from dozens of stud­ies re­veals that re­plac­ing sat­u­rated fat in the diet with un­sat­u­rated fat re­duces low-den­sity lipopro­tein choles­terol. In ad­di­tion, of the un­sat­u­rated fats, seed oils such as sun­flower have the strong­est ef­fect.

Dr. Lukas Sch­wing­shackl from the Ger­man In­sti­tute of Hu­man Nu­tri­tion Pots­dam-Re­hbruecke led the new study.

This study was the first to carry out an anal­y­sis that al­lows the im­pact of sev­eral oils and solid fats on blood lipids to be as­sessed in a sin­gle model.

Many have com­pared the ef­fect of re­plac­ing a food rich in sat­u­rated fat, such as but­ter or lard, with one rich in un­sat­u­rated fat, such as plant-based olive oil and sun­flower. How­ever, the ev­i­dence makes it dif­fi­cult to find out which of the many plant-de­rived oils have the great­est ben­e­fit.

To this end, Dr. Sch­wing­shackl and team used a sta­tis­ti­cal tech­nique called net­work meta-anal­y­sis, which is gain­ing ground in health re­search as a way to glean ev­i­dence from enor­mous amounts of data through the use of "di­rect and in­di­rect com­par­isons."

In­ves­ti­ga­tors use net­work meta-anal­y­sis to find an­swers that could oth­er­wise only be ad­dressed in "gi­ant stud­ies" that com­pare the ef­fect of many dif­fer­ent in­ter­ven­tions on a sin­gle re­sult. "The beauty of this method," Dr. Sch­wing­shackl ex­plains, "is that you can com­pare a lot of dif­fer­ent in­ter­ven­tions si­mul­ta­ne­ously. The end re­sult, he adds, is that "you can say" which of the oils is best for the "spe­cific out­come."

The method, for in­stance, al­lows a com­par­i­son of but­ter with sun­flower oil to be in­ferred in­di­rectly by an­a­lyz­ing the re­sults of two tri­als: one that tested but­ter against olive oil di­rectly, and an­other that tested sun­flower against olive oil di­rectly.

The new find­ings fea­ture in a pa­per that is now pub­lished in the Jour­nal of Lipid Re­search.

Ac­cord­ing to the World Health Or­ga­ni­za­tion (WHO), heart disease and stroke are the big­gest killers world­wide and have been so for 15 years.

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