Keep in mind that beer is only really healthy if you drink it in moderation. Some scientists even argue that the health benefits of alcohol for humans are disputed due to differences in research methods. However, all doctors and scientists agree that the health risks of drinking large amounts of alcohol outweigh the benefits. Alcohol can weaken your assertiveness, so it can be difficult to stop drinking after just a drink or two.
The harmful effects of alcohol usually appear most clearly in the liver, the organ that removes toxins from the body. In the liver, the enzymes first convert alcohol to acetaldehyde, a chemical intermediate that can cause nausea, headaches, vomiting and other adverse effects of alcohol consumption. During this transformation, a molecule called NADH is also produced. Acetaldehyde is converted to acetic acid and then the water and carbon dioxide that we breathe out. Unfortunately, in those who drink regularly, the liver is unable to metabolize toxic acetaldehyde quickly enough and becomes weaker over time.
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