Phytosterols are found only in plant-based foods and very closely resemble the molecular structure of cholesterol. But unlike cholesterol, phytosterols are not easily absorbed by the body. Scientists believe that because of this, the compound can partially block cholesterol from being absorbed, thereby lowering overall cholesterol levels naturally.
Philips and her colleagues recognized that nuts and seeds tend to be high in phytosterols, but no study had adequately compared the amounts of the compound found in all of the varieties, which range in size from poppy seeds to walnuts.
While wheat germ and sesame seeds were found to contain the highest amount of phytosterols, according to the tests, most people do not eat these foods by themselves, let alone in high enough amounts for it to matter. So, the third and forth place finishers, sunflower seeds and pistachios, were considered by Philips to be the most practical nutty snack for people looking to lower their cholesterol.
Even if you don't consider sunflower seeds or pistachios a desirable treat, any of the nuts and seeds tested were found to contain at least a small amount of phytosterols. So, if walnuts are more tempting than pistachios, munch away. But Philips also advises you to consider other options, such as diet and exercise, that are proven to substantially help lower your cholesterol.
"This isn't the only food product to prevent high cholesterol," she said. "There are many other factors at play."
