Supplements with too much Vitamin A can be toxic to the liver since Vitamin A is a fat soluble vitamin (meaning more gets stored than excreted.) Sweet potatoes and other foods rich in Vitamin A, however, do not cause liver toxicity and can not be stored for long-term use like supplements can.
The wound healing stages are made up of three basic phases: inflammation, proliferation and maturation. There are many types of wounds that require different wound care products for proper recovery from an ulcer or laceration, but most go through similar healing stages.
The first thing to understand is that wounds heal in four stages. The phases of wound healing are: 1) Hemostasis-clotting and stabilizing of the wound with fibrin and platelets. 2) Inflammation-lasts up to four days. Redness, swelling and warmth occur as white blood cells arrive and prepare to fight infection.