

Also, excess alcohol weakens the stomach’s lining, which allows dangerous microorganisms to enter other parts of the body. Drinking alcohol is does alcohol suppress immune system a major factor in the disruption of the digestive system. As a result, a person experiences gastrointestinal challenges that lower immunity.
The body constantly is exposed to pathogens that penetrate either our external surface (i.e., the skin), through wounds or burns, or the internal surfaces (i.e., epithelia) lining the respiratory and gastrointestinal (GI) tracts. The body responds to such an infectious challenge with a two-level response. The first line of defense is called the innate immunity;1 it exists from birth, before the body is even exposed to a pathogen. It is an immediate and rapid response that is activated by any pathogen it encounters (i.e., is nonspecific); in addition, it plays a key role in the activation of the second level of the immune response, termed the adaptive or acquired immunity. This part of the immune response is specific to one particular pathogen and also creates an “immune memory” that allows the body to respond even faster and more effectively if a second infection with the same pathogen occurs. Both innate and adaptive immunity rely on a multitude of different cells and molecules.
“Alcohol has diverse adverse effects throughout the body, including on all cells of the immune system, that lead to increased risk of serious infections,” said Dr. E. Jennifer Edelman, a Yale Medicine addiction medicine specialist. For example, a 2015 study in the journal Alcohol found that binge drinking can reduce infection-fighting white blood cells known as monocytes in the hours after peak intoxication, essentially weakening your immune system. Though alcohol seems woven into the fabric of our social lives, drinking can have harmful health effects, even in small doses.
But when you’ve ingested too much alcohol for your liver to process in a timely manner, the toxic substance begins to take its toll on your body, starting with your liver. “The oxidative metabolism of alcohol generates molecules that inhibit fat oxidation in the liver and, subsequently, can lead to a condition known as fatty liver,” says Dr. Menon. Your liver detoxifies and removes alcohol from the blood through a process known as oxidation. Once the liver finishes the process, alcohol becomes water and carbon dioxide. If alcohol accumulates in the system, it can destroy cells and, eventually, organs. This article discusses the physiological and psychological effects of alcohol and how to change your drinking habits.
Similarly, as with the Th1 responses, alcohol inhibits the ability of dendritic cells to promote Th17 responses, thereby favoring Th2 responses (Heinz and Waltenbaugh 2007). These observations suggest that immune defects seen in individuals with AUD could also be mediated by nutritional deficiencies in addition to barrier defects and functional changes in immune cells. However, the contributions of each of these changes to increased susceptibility to infection in individuals with AUD remain to be determined. Chronic drinking — for 12 to 15 years — can lead to a reduction in the number of T cells. Extremely heavy drinking — about 30 drinks per day — can throw off the balance of immune system cells. Several studies have also shown that the lungs are highly vulnerable to the effects of alcohol.

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