Also known as: dry days, alcohol-free days, reduced alcohol intake
Latest evidence update: 2026-04-29
Strongest in Recency (100). Held back by Consistency (59).
Solid mix of RCTs with some methodological gaps.
Good cross-study replication, some imprecision.
Tens of thousands of participants pooled across studies.
Mostly aligned, with some divergence.
Most studies are recent (last 2-3 years).
No per-outcome numbers yet for this one. Each finding's direction and strength is shown in the research below.
Designating 3-4 nights per week with zero alcohol. Explicit dry days outperform vague 'drink less' goals and give the liver, sleep architecture, and cardiovascular system time to recover.
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Alcohol consumption was positively associated with vision-threatening diabetic retinopathy (VTDR).
Alcohol abstinence or reduction decreases AF symptoms, burden, and progression.
ACT-BA reduced drinks per drinking day compared to TAU.
WDYD significantly increased intrinsic motivation to reduce drinking up to 25 weeks (week 25 standardized β=0.54, 95% CI 0.06 to 1.02).
Asian American undergraduates who received phenotype feedback plus personal ALDH2 genotype results (PHEN+GENE) had significantly higher intention to change drinking compared with attention controls, regardless of ALDH2*2 status.