Are they good and safe?
Dr. Petter Attias in on of his talks say that phytosterols, from plants, are really not good for you. Your body tries to keep these out.
But maybe he is crazy.
Phytosterols are found in all plant foods, but the highest concentrations are found in unrefined plant oils, including vegetable, nut, and olive oils. Nuts, seeds, whole grains, and legumes are also good dietary sources of phytosterols.
https://lpi.oregonstate.edu/mic/dietary-factors/phytochemicals/phytosterols
eat more plants ;-)