Removing alcohol eliminates a substance the body turns into a DNA-damaging by-product. The strongest case is cancer, where harm appears to begin at low intake; certainty is greater for cancer and blood pressure than for other claimed benefits. Avoidance also lowers blood pressure, supports the liver, and improves sleep and energy. The downside is unsafe withdrawal after heavy use. (Full Review)
| Marker | Target | Why |
|---|---|---|
| GGT | < 20 U/L | Sensitive marker of recent alcohol load and liver stress |
| ALT / AST (liver enzymes) | < 25 U/L | Tracks liver injury and recovery |
| Blood pressure | < 120/80 mmHg | Captures alcohol's reversible pressor effect |
| Triglycerides | < 100 mg/dL | Alcohol raises triglycerides; abstinence lowers them |
| MCV | 80–90 fL | Elevated red-cell size reflects chronic heavy intake and B-vitamin status |
| CDT | < 1.7% | Specific marker of sustained heavy drinking |
Cadence: Baseline before/at start of abstinence, then recheck at ~4 weeks, again at 3 months, then every 6–12 months.