What is the sick feeling after drinking too much alcohol?

The sick feeling after drinking alcohol, often referred to as a hangover, is caused by various physiological and metabolic processes. Here are some key factors:

1. Dehydration: Alcohol acts as a diuretic, increasing urine output and leading to dehydration. This fluid loss can cause symptoms like thirst, fatigue, and headaches.

2. Acetaldehyde: Alcohol is broken down in the body into acetaldehyde, a toxic compound that can cause inflammation and damage to cells. Acetaldehyde can lead to nausea, vomiting, and headaches.

3. Congeners: Congeners are impurities found in alcoholic beverages, particularly darker-colored drinks. They contribute to the taste, color, and aroma of alcohol but can also worsen hangover symptoms like headaches, nausea, and dizziness.

4. Gastric Irritation: Alcohol can irritate the lining of the stomach and intestines, causing inflammation and symptoms such as nausea, abdominal pain, and diarrhea.

5. Nutrient Depletion: Alcohol can interfere with the absorption and metabolism of essential nutrients, leading to deficiencies. This can contribute to fatigue, weakness, and impaired cognitive function.

6. Impaired Sleep: Alcohol can disrupt the body's natural sleep cycle and lead to poor-quality sleep. This can result in fatigue, irritability, and difficulty concentrating.

7. Electrolyte Imbalance: Alcohol consumption can lead to an imbalance in electrolyte levels, such as sodium, potassium, and magnesium, further contributing to headaches and fatigue.

8. Inflammation: Alcohol can trigger inflammation in the brain and other organs, leading to symptoms such as headaches, muscle aches, and fever.

The severity and duration of a hangover can vary depending on several factors, including the amount of alcohol consumed, individual tolerance, genetics, hydration levels, and overall health. It's important to drink responsibly and within recommended guidelines to minimize the risk of experiencing a hangover. In case of severe hangover symptoms, it's advisable to rest, hydrate, and avoid further alcohol consumption until the symptoms subside.