On the annual World Water Day, nonprofit Water.org is raising awareness for those who lack clean water access and pointing to the fact that one child dies from a water-related disease every 21 seconds.
Finally, scar tissue forms to mimic the structure of the skin before the wound to heal the tissue. That said, there are many reasons why a wound is slow to heal. Certain wounds take longer to heal than others (i.e., leg or foot ulcers). Poor nutrition can also damage the body's ability to heal wounds. Too few calories, especially from proteins, and inadequate vitamin (and zinc) intake may affect wound healing. An infected wound harboring a large number of bacteria usually slows the healing process.
Length of healing time for burn wounds to heal depends on the depth and extent of the wound. First-degree burns heal quite quickly in usually less than 3 weeks. Deep second-degree and third-degree burns may require debridement, antibiotic dressing changes, and surgical reconstruction with skin grafts or flaps requiring months of healing and rehabilitation.