Can guacamole lower your cholesterol as well as other whole-food fat sources like nuts, or is that just spin by the avocado industry? “Avocados are the richest known fruit source of phytosterols,” the cholesterol-lowering nutrients found in plant foods, brags a review sponsored by the HASS Avocado Board. The operative word, though, is fruit. Yes, avocados contain more phytosterols compared to other fruit, but phytosterols are fat-soluble…