Earlier this month, for instance, the media reported on a new study that found even small amounts of alcohol might be harmful. Yet we continue to see reductive narratives, in the media and even in science journals, that alcohol in any amount is dangerous. It’s hard to escape the message these days that every sip of wine, every swig of beer is bad for your health. This story was previously published in Harvard Public Health magazine, which featured independent journalism about public health challenges and solutions outside Harvard Chan School. Your gift powers drinking when bored excellence in research and education to advance public health. Alcohol (in any amount) is a well-known cause of cancer
“When your liver is overwhelmed by oxidizing alcohol, it generates molecules that inhibit fat oxidation,” Dr. Sengupta explains. But when you ingest too much alcohol for your liver to process in a timely manner, a buildup of toxic substances begins to take a toll on your liver. You probably already know that excessive drinking can affect you in more ways than one. During pregnancy, drinking may cause the unborn baby to have brain damage and other problems. Heavy drinking also has been linked to intentional injuries, such as suicide, as well as accidental injury and death.
Understanding excessive drinking
Most birds scoop or draw water into the buccal areas of their bills, raising and tilting their heads back to drink. In addition, specialized nectar feeders like sunbirds (Nectariniidae) and hummingbirds (Trochilidae) drinkby using protrusible grooved or trough-like tongues, and parrots (Psittacidae) lap up water. In savannas, the drinking method of giraffes has been a source of speculation for its apparent defiance of gravity; the most recent theory contemplates the animal’s long neck functions like a plunger pump. Many desert animals do not drink even if water becomes available, but rely on eating succulent plants.
Heart health
That doesn’t mean drinking a lot of alcohol is good for you—but it does suggest that the science around alcohol and health is complex. It’s important to keep in mind that alcohol affects many body systems—not just the liver and the brain, as many people imagine. Excessive drinking can have short-term and long-term health effects. ‘Blackout rage gallons’ can lead to dangerous levels of alcohol consumption
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Furthermore, heavy drinking may increase the risk for developing type 2 diabetes due to increased body weight, blood triglyceride levels, or blood pressure, and decreased insulin sensitivity, for example. But after countless studies, the data do not justify sweeping statements about the effects of moderate alcohol consumption on human health. Heavy drinking can also lead to a host of health concerns, like brain damage, heart disease, cirrhosis of the liver and even certain kinds of cancer. Chronic, heavy drinking raises the risk for ischemic heart disease (heart problems caused by narrowed arteries) and myocardial infarction (heart attack). Scientific evidence about drinking alcohol goes back nearly 100 years—and includes plenty of variability in alcohol’s health effects.
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When conditions impel them to drink from bodies of water, the methods and motions differ greatly among species. Drinking can also be by sipping or sucking, typically when imbibing hot liquids or drinking from a spoon. Most animals drink water to maintain bodily hydration, although many can survive on the water gained from their food.
It’s tempting to assume that because heavy alcohol consumption is very bad, lesser amounts must be at least a little bad. As these examples illustrate, drinking alcohol may raise the risk of some conditions but not others. But observational studies cannot prove cause-and-effect because moderate drinkers differ in many ways from non-drinkers and heavy drinkers—in diet, exercise, and smoking habits, for instance. Moderate alcohol consumption has been studied in dozens of randomized controlled trials, but those trials have never tracked more than about 200 people for more than two years.
Drinking moderately if you’re otherwise healthy may be a risk you’re willing to take. When it comes to alcohol, if you don’t drink, don’t start for health reasons. In the United States, people younger than age 21 are not legally able to drink alcohol.
Brain
The definition of heavy drinking is based on a person’s sex. For example, any amount of drinking increases the risk of breast cancer and colorectal cancer. In the United States, moderate drinking for healthy adults is different for men and women. The evidence for moderate alcohol use in healthy adults is still being studied. People who are dependent on alcohol, or have other medical or mental health problems, should stop drinking completely.
Risks of moderate alcohol use
Alcohol consumption has developed into a variety of well-established drinking cultures around the world. Evidence of fermented drinks in human culture goes back as early as the Neolithic Period, and the first pictorial evidence can be found in Egypt around 4,000 BC. An overconsumption of water can lead to water intoxication, which can dangerously dilute the concentration of salts in the body.
- Warnings from the World Heart Federation go so far as to state that no amount of alcohol is safe for your ticker.
- The evidence for moderate alcohol use in healthy adults is still being studied.
- For example, any amount of drinking increases the risk of breast cancer and colorectal cancer.
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- “We see lower levels of a specific kind of white blood cells called lymphocytes in people who drink heavily for long periods of time,” Dr. Sengupta reports.
Sign up for free and stay up to date on research advancements, health tips, current health topics, and expertise on managing health. Be sure to ask your healthcare professional about what’s right for your health and safety. When taking care of children, avoid alcohol. The term “moderate” also may be used differently. Health agencies outside the U.S. may define one drink differently.
Yes, grabbing a few beers or a couple of glasses of wine or cocktails with friends can increase your heart rate — dangerously in some cases ACV may help lower blood sugar and calm acid reflux, but don’t believe all the hype An enzyme deficiency or rosacea are potential causes of alcohol flush “Alcohol tends to cause more problems than it solves for a lot of people,” Dr. Sengupta emphasizes.
- Some people attain their goal only to find that old habits crop up again later.
- Methods used in the management of dehydration include assisted drinking or oral rehydration therapy.
- People who choose not to drink make that choice for the same reasons.
- Similarly, in randomized trials, alcohol consumption lowers average blood sugar levels.
In the past, moderate drinking was thought to be linked with a lower risk of dying from heart disease and possibly diabetes. The less alcohol you drink, the lower your risk for these health effects, including several types of cancer. Similarly, in randomized trials, alcohol consumption lowers average blood sugar levels. Observational trials suggest that alcohol consumption also raises the risk of specific subtypes of breast cancer that respond to these hormones.
“If drinking is affecting your health, your relationships, your work, your finances, it’s time to make some serious changes.” “Excessive alcohol consumption can cause nerve damage and irreversible forms of dementia,” Dr. Sengupta warns. But no research proves that red wine causes any improvements in heart health in people. Once you take a drink, your body makes metabolizing alcohol a priority — above processing anything else.
A decline in total body water is called dehydration and will eventually lead to death by hypernatremia. Saltwater fishes do drink plenty of water and excrete a small volume of concentrated urine. Saltwater fish, however, drink through the mouth as they swim, and purge the excess salt through the gills.