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.
There are different stages of sunburn. Like with any burn, there are varying degrees. 1  Stage 1: Skin becomes golden during the first stage. 2  During this stage, your skin may adapt itself to the UV exposure by thickening and darkening. 3  During this stage, your skin is tanning.