Smoking is one of the most dangerous factors slowing wound healing and may be the primary cause of an acute wound becoming chronic. Its effect is multi-mechanism and starts within minutes of smoking.
How Smoking Affects Healing:
- Oxygen deprivation (most important): Nicotine constricts blood vessels reducing blood flow. Carbon monoxide replaces oxygen in hemoglobin. Result: 30-40% less oxygen reaches the wound.
- Weakened immunity: Reduces number and activity of white blood cells — especially macrophages essential for wound cleaning.
- Collagen damage: Reduces collagen production and destroys existing collagen — the "building block" of wound healing.
- Increased platelet adhesion: Increases clot risk in microvessels around the wound.
- Direct toxic effect: Thousands of chemicals in smoke are toxic to cells.
The Good News:
Quitting improves healing immediately — within 48 hours carbon monoxide levels drop and oxygen delivery improves.
At BEIT TARIQ Center, we advise all patients to quit and explain the direct impact on their wound as additional motivation.