Lower BAC levels may already affect reaction time and attention, even when the person feels normal.

Higher BAC levels are associated with balance issues, blackouts, vomiting, and serious safety risks.

Do not use BAC values to decide whether it is safe to drive; the safest choice is not to drive after drinking.

Heavy drinking can increase the risk of liver disease, high blood pressure, sleep problems, injuries, and mood changes. Mayo Clinic describes heavy alcohol use as a pattern that exceeds common low-risk limits and may lead to both short-term and long-term health consequences.

Alcohol can also interact with medications, reduce coordination, and raise the chance of accidents. If alcohol is part of your routine, it is wise to track intake and understand the cumulative impact over time.

For safety, anyone who may have had too much alcohol should not drive, operate equipment, or make critical decisions. If poisoning is suspected, seek urgent medical help immediately.