Drug Use. The use of any medication, such as prescription, over the counter, illicit or unrecognized drugs when mixed with alcohol may produce unwanted physical reactions. Be aware and cautious of the additive and synergistic effects of combining drugs with alcohol.
Age. As people age, so do their organs. Liver function may be less efficient in older people, so their ability to process alcohol will be diminished.
Tolerance. Regular drinking can lead to a condition known as tolerance. This means the individual’s body is accustomed to alcohol and processes it rather effectively. Over time, more alcohol is required to produce the same effect. Drinkers who have developed a tolerance will not show the same outward signs of intoxication as inexperienced drinkers, but they will still have a high BAC.