Alcoholic beverages are very popular. Light-to-moderate alcohol consumption is typically safe, but excessive alcohol consumption can increase the risk of several metabolic conditions, including high blood pressure.
Keep reading to learn more about how alcohol affects blood pressure, some other risks associated with drinking alcohol, and the potential health benefits of cutting down.
Systolic pressure is the pressure within the arteries of the heart when the heart contracts, and diastolic pressure refers to the lowest pressure in the arteries when the heart is relaxing between contractions.
The unit of measurement for blood pressure is millimeters of mercury (mm Hg). It is expressed as systolic pressure over diastolic pressure.
A normal blood pressure is less than or equal to
Drinking alcohol affects blood pressure in more than one way. The following sections will look at some of these ways in more detail.
The renin-angiotensin-aldosterone system
Consuming alcohol affects the
Alcohol increases blood levels of the hormone renin, which causes the blood vessels to constrict. This means that they get smaller in diameter. Renin also decreases how much fluid the body eliminates as urine.
This combination of higher fluid levels in the body and smaller blood vessels
Alcohol also reduces how much
Vasopressin is an antidiuretic hormone. It causes the body to hold onto water, which typically limits how much urine the kidneys make. The action of suppressing this hormone exacerbates the diuretic effect and leads to dehydration.
Another potential mechanism is the increase in
Cortisol increases the release of
Having higher levels of catecholamines causes the body to excrete less fluid through urine. Having more fluids in the body directly
Alcohol also decreases
There are two different types of baroreceptors: high pressure baroreceptors and low pressure receptors. Both of these activate when the blood vessels stretch.
When blood pressure decreases, these receptors help minimize how much the blood vessels stretch to increase blood pressure. Similarly, when blood pressure increases, these receptors increase the stretching of the blood vessel walls in order to decrease blood pressure.
Alcohol prevents the body’s baroreceptors from detecting a need to stretch the blood vessels and increase their diameter, causing an
Blood calcium levels
Alcohol consumption increases the amount of
The definition of a standard drink is a beverage containing
- 12 fl oz of regular beer containing 5% alcohol
- 5 fl oz of wine containing 12% alcohol
- 1.5 fl oz of distilled spirits containing 40% alcohol
Although these values can be helpful, there is some variation in alcohol content. For example, some beers — especially craft beers — can contain about twice as much alcohol as above.
There are three main classifications of drinking. These are heavy drinking, moderate drinking, and binge drinking.
According to the National Institute on Alcohol Abuse and Alcoholism:
- Heavy alcohol use means men consuming more than four drinks on any given day, or more than 14 drinks per week, and women consuming more than three drinks on any given day, or more than seven drinks per week.
- Binge drinking means men consuming five or more drinks in about 2 hours and women consuming four or more drinks in about 2 hours.
- Moderate drinking means men consuming two drinks or fewer per day and women consuming one drink or fewer per day.
Recent data suggest that moderate and heavy drinking contributes to high blood pressure in men and women.
One recent study in the Journal of the American College of Cardiology found that in 17,059 participants, those who drank moderately and those who drank heavily were both at significantly higher risk of high blood pressure than those who never drank.
Another study, this time in the
Alcohol increases the risk of several other short- and long-term health issues.
- alcohol poisoning
- engaging in risky sexual behaviors, such as having sex without using a condom
- bodily injury
- irregular breathing
- memory issues
- slurred speech
Completely refraining from consuming alcohol lowers the risk of some of the health risks listed above. Although some of those effects can occur without alcohol consumption, avoiding alcohol helps decrease the risks.
Individuals who drink alcohol in excess can help improve their overall health by stopping drinking. For some people, this can be an easy process.
However, people who are dependent on alcohol or have been misusing alcohol for a long period of time may have difficulty quitting.
Some of the symptoms associated with
Individuals who do not experience withdrawal symptoms will likely see the positive effects of giving up alcohol shortly after doing so.
Some of the
- weight loss
- more energy
- better sleep
- a lower risk of various conditions
If a person thinks that they might be consuming alcohol at a rate that would classify as moderate drinking, heavy drinking, or binge drinking, they should consider cutting back to improve their overall health and well-being.
Consuming alcohol can increase the risk of high blood pressure and other metabolic conditions in several ways. For example, alcohol can affect calcium levels, cortisol levels, and baroreceptor sensitivity, all of which can lead to increases in blood pressure.
To prevent various health complications, including high blood pressure, people should try to limit their alcohol consumption to one or two glasses infrequently.
If a person has concerns that they or someone they know might have a dependency on alcohol, they should seek professional advice and support as soon as they can.