Is red wine actually good for your heart?

When this occurs, you’ll urinate some of the water your body had stored beforehand, leaving you more dehydrated than you were before. This is somewhat similar to how coffee can lead to fast urination, although wine is generally more dehydrating because of the effects below as well. For starters, if you drink wine while on an empty stomach, your intestines will absorb the alcoholic content and the liquid very quickly. Since there isn’t any food to get in the way, this will result in your body absorbing what water is already in the wine, leaving the alcohol in your system by itself. “You can’t entirely prevent it, but if you go into drinking well-hydrated, you are less likely to feel the negative effects of dehydration,” she says. Alcohols like whiskey and brandy have high levels of congeners, including tannins and acetaldehyde.

• Some cocktails can take a toll on your hydration because of additional ingredients.
• Because of this, you can also feel sluggish, drained, or tired even though the alcohol technically has some carbohydrates in each glass your body should be able to use for quick energy.
• “If you had to choose one type of alcohol, red wine would be the one to pick,” Caroline Le Roy, PhD, a researcher at King’s College London and first author of the new study, told Healthline.
• When comparing the dehydration effects of wine and beer, it all comes down to their alcohol content.

However, researchers acknowledge that there are likely multiple mechanisms behind dehydration-related headaches, and that some people may be more susceptible to dehydration-related headaches than others (11). Healthcare professionals often use something called the skin turgor test to assess a person’s hydration status. This is because dehydration affects every aspect of health, including your sleep-wake cycles.

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Beverages with lower alcohol content, such as beer, did not appear to have this effect. You can avoid it by regularly drinking water and other fluids and eating foods with high water content. You can treat mild dehydration by replacing lost fluids with water or oral rehydration solutions. “If you have a glass of red wine with your does red wine dehydrate you evening meal tonight, your peak blood sugar, if you measured it an hour later, would be about 30% lower than if you hadn’t had the wine,” O’Keefe says. The post-meal spike in sugar is one of Americans’ main sources of inflammation, which contributes to everything from diabetes to dementia to heart disease and arthritis, he adds.

For example, it’s common to become dehydrated when you’re experiencing symptoms like diarrhea, vomiting, and high fever. Although mild to moderate dehydration is common in children who are sick, any kind of dehydration can be extremely dangerous to your child’s health if not treated quickly. A dehydrated infant or child may not show the same signs of dehydration that adults do, making it hard for parents and caregivers to identify potential dehydration. Low blood pressure is a sign of severe dehydration, and it can be dangerous.

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Huang et al. [86] studied the most common red wine anthocyanins, malvidin-3-glucoside and malvidin-3-galactoside, to evaluate their effect on the inflammatory response in endothelial cells. An anti-inflammatory effect was shown by both malvidin-3-glucoside and malvidin-3-galactoside, and a synergistic effect of the two compounds was also found. Hydroxybenzoic acids (HBAs) are phenolic metabolites with a general C6–C1 structure. In red wine, the most abundant HBAs are represented by p-hydroxybenzoic, gallic, vanillic, gentisic, syringic, salicylic, and protocatechuic acids [22,23]. As reported, the different hydroxybenzoic acids may occur mainly in their free forms [24].

However, other human studies have noted that moderate alcohol consumption may help improve blood sugar control — potentially making it easier to manage weight (10, 11). The serving sizes for alcoholic beverages for men and women are different because women have less  water in their bodies to dilute the effects of alcohol. And the longer large amounts of alcohol stay in your body, the higher your risk for brain and organ damage, high blood pressure and stroke . If you’ve eaten some food and have consumed a glass of water, you can drink a few glasses of wine before you start to feel the effects of mild to moderate dehydration.

Bioactive Components in Red Wine

Some studies have found people who drink moderate amounts of red wine have lower rates of heart disease and high blood pressure. These results suggest that the beneficial effects could be mediated by antioxidant compounds present in red wine, while alcohol did not seem fundamental to obtain such effects. The genetic factors (variety) of grapes and the vinification conditions are considered the main factors that influence the wine polyphenolic composition [32].

These might lead to dehydration more quickly, according to a 2010 study [8] [9]. The results showed that Vineatrol 30 was able to prevent aortic fatty streak deposition by increasing antioxidant and anti-inflammatory activities. Several studies regarding the health benefits of trans-resveratrol in maintaining human health and preventing a wide variety of human diseases are available [40,41,42,43,44,45]. Resveratrol (3, 4, 5 trihydroxystilbene), a non-flavonoid polyphenolic compound, is a common phytoalexin synthesized in response to the attack of bacteria and fungi [33].