How Does a Cut Heal?
When you cut yourself, blood flows out of the wound from blood vessels in your flesh. If the cut is small, the bleeding stops rather quickly. When blood is exposed to the air, it thickens, or clots.
This plugs up the wound so that you don’t lose too much blood. It also keeps out harmful germs and bacteria that might cause an infection.
The clot hardens until it forms a hard, strong scab. The scab provides a protective covering while the wound is healing. Under the scab, new skin tissue grows and repairs the cut. The scab falls of when the cut has healed.
Not all wounds heal equally. Generally speaking, most small cuts, scrapes, or abrasions will heal well without any special care, within a week. More serious wounds take longer to heal.
Individual factors also influence how quickly your body is able to recover from a wound, including:
• Age — young usually heal faster than older folks
• Nutrition — the body needs a good supply of vitamin C to make collagen
• Other infections or illnesses — diabetes, thyroid disease, high blood pressure, and poor circulation, for example, can decrease the body’s ability to heal.