Apart from their cholesterol levels , participants were healthy. None was taking cholesterol-lowering drugs .
First, participants spent two weeks on a standard American diet rich in full-fat cheese, oil, and butter and lacking pistachios.
Next came a month on a low-fat diet without pistachios, another month on a healthy diet that included one daily serving of pistachios, and a third month eating a similar diet with two daily servings of pistachios, with two-week breaks between each type of diet.
Participants got all their food, packaged into appropriate serving sizes, from the researchers. And they stuck to their assigned diets pretty well, the study shows.
Lower LDL
Average LDL levels fell when participants ate pistachios -- not enough to get their LDL levels into the optimal range, but enough to get it out of the "borderline high" category.
First, participants spent two weeks on a standard American diet rich in full-fat cheese, oil, and butter and lacking pistachios.
Next came a month on a low-fat diet without pistachios, another month on a healthy diet that included one daily serving of pistachios, and a third month eating a similar diet with two daily servings of pistachios, with two-week breaks between each type of diet.
Participants got all their food, packaged into appropriate serving sizes, from the researchers. And they stuck to their assigned diets pretty well, the study shows.
Lower LDL
Average LDL levels fell when participants ate pistachios -- not enough to get their LDL levels into the optimal range, but enough to get it out of the "borderline high" category.
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