Which condition is NOT an effect of alcohol consumption?

When considering the effects of alcohol consumption, improved sleep quality stands out as an incorrect association. Alcohol is known to have a complex relationship with sleep; while it may initially induce sleep due to its sedative properties, it ultimately disrupts the normal sleep cycles. Specifically, alcohol consumption is linked to a decrease in REM sleep, which is essential for restorative rest. As the night progresses, alcohol can lead to fragmented sleep, frequent awakenings, and a reduction in overall sleep quality.

In contrast, the other listed conditions—such as increased blood pressure, increased risk of stroke, and higher risk of unintentional injuries—are well-documented effects of alcohol consumption. Alcohol can cause vasoconstriction and elevate blood pressure, contribute to the formation of blood clots or other cardiovascular issues potentially leading to stroke, and impair judgment and motor skills, thereby increasing the likelihood of accidents. Therefore, identifying improved sleep quality as a non-effect highlights a critical understanding of the negative impact alcohol has on sleep health.