Which is NOT a direct physiological effect of alcohol consumption?

Weight loss is the correct choice as it is not a direct physiological effect of alcohol consumption. Alcohol is calorie-dense, providing about 7 calories per gram, which can contribute to weight gain rather than loss when consumed in excess. Additionally, alcohol can impact metabolism by promoting fat storage and inhibiting fat burning, which can further complicate weight management.

On the other hand, the other options reflect well-documented effects of alcohol. Increased energy is often mistakenly associated with alcohol consumption due to its stimulating effects in low doses. However, over time and with higher consumption, alcohol typically leads to decreased energy levels. Reduced coordination is a well-known impact of alcohol, as it affects the central nervous system and impairs motor skills and reaction times. Memory impairment is also a significant consequence of alcohol usage, particularly in cases of binge drinking or chronic use, as alcohol affects cognitive functions and can lead to blackouts and long-term memory issues.