How Alcohol Affects the Body Alcohol is widely consumed in social settings, celebrations, and relaxation routines. While moderate intake may fit into some lifestyles, it’s important to understand how alcohol affects the body, both short-term and long-term. Knowing what happens internally can help you make more informed, health-conscious decisions. Let’s break down how alcohol interacts with major systems in the body. The Brain and Nervous System Alcohol is a central nervous system depressant, meaning it slows down brain activity. Short-Term Effects: Reduced inhibitions Slower reaction time Impaired judgment Decreased coordination Memory disruption Alcohol increases the activity of calming neurotransmitters and decreases the activity of stimulating ones. This is why people may initially feel relaxed or euphoric. However, as blood alcohol levels rise, cognitive and motor function become increasingly impaired. Long-Term Impact: Frequent heavy drinking may affect memory, mood regulati...