Stigmastanol (sitostanol) is a phytosterol found in a variety of plant sources.

Similar to sterol esters and stanol esters, stigmastanol inhibits the absorption of cholesterol from the diet.

[2][3][4] Animal studies suggest that it also inhibits biosynthesis of cholesterol in the liver.

[2][verification needed] Stigmastanol is the product of the reduction of β-sitosterol[5] and the hydrogenation of stigmasterol.

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