Natural wine and hangovers: myth and reality
"Natural wine doesn't give you a hangover." You've heard it, maybe even said it. It's the #1 argument for natural wine lovers — and it's also the claim most often mocked by skeptics. The truth lies somewhere in between: natural wine can indeed be easier to digest, but not for the reasons people think, and it doesn't exempt you from drinking in moderation.
First: what is a hangover?
A hangover (or "veisalgia" in medical terminology) consists of several symptoms: headaches, nausea, fatigue, light sensitivity, and feelings of dehydration. It has several simultaneous causes:
- Alcohol: this is the primary and irrefutable cause. Ethanol is a toxic substance that the liver metabolizes into acetaldehyde, which is itself toxic, before converting it into acetate. This process takes time, produces free radicals, and that is what causes pain.
- Dehydration: alcohol is a diuretic. It forces the kidneys to eliminate more water than you drink, which explains the thirst and headaches the next day.
- Inflammation: alcohol triggers an inflammatory response in the body, particularly in the digestive tract.
- Disrupted sleep: alcohol helps you fall asleep but degrades the quality of deep sleep.
- Congeners: secondary chemical substances produced during fermentation (aldehydes, ketones, tannins...) that can worsen certain symptoms.
The real role of sulfites
The popular theory goes: "natural wine contains fewer sulfites, therefore fewer headaches." This is partially true regarding sulfites, but their role in a hangover is often overrated.
Sulfites (SO₂) can cause allergic reactions or asthma in some people — but this is not a classic hangover. True reactions to sulfites (nasal congestion, breathing difficulties) are actually infrequent and mainly affect asthmatic people. Most people who claim to have a "sulfite sensitivity" are actually reacting to histamines or congeners in the wine.
That said, a wine with less added sulfur is objectively less loaded with chemical inputs, and some people do indeed report tolerating it better. That is not impossible — but it doesn't explain everything. To understand exactly what sulfites are and why they are debated, our article what are sulfites? provides an overview.
What really works in favor of natural wine
Even if sulfites aren't the only factor, several characteristics of natural wine can contribute to a better "next morning" experience:
Fewer inputs in general
A natural wine contains no acidifiers, no powdered tannins, no enzymes, and no industrial yeasts selected to boost aromas. The fewer foreign substances there are in the wine, the less work the body has to do to process them. This is common sense, even if it remains difficult to measure precisely.
Slower and more complete fermentations
Indigenous yeasts ferment more slowly than industrial yeasts. This may seem like an inconvenience to the winemaker, but it often results in wines with fewer fermentation residues (congeners) and more stable aromatic profiles. A well-conducted fermentation, even a long one, generally produces a "cleaner" wine than a rapid, forced fermentation.
Often more moderate alcohol levels
Many natural winemakers harvest earlier to preserve the freshness and acidity of the grapes — which results in wines with lower alcohol levels (11-12% for a natural Gamay, against 13-14% for a conventional chaptalized Gamay). Less alcohol in the glass mechanically means less work for the liver the next day. But this trend is not universal: some natural wines from Languedoc or the southern Rhône have high alcohol levels simply because the sun demands it.
What doesn't change at all
Let's be honest. When someone drinks too much natural wine, they still get a hangover. Alcohol is still alcohol. A 12% natural Gamay gives you less of a headache than a 15% Australian Shiraz drunk in the same quantity — but it's the difference in strength that counts, not the "natural" label on the bottle.
The basic rules remain the same, natural wine or not: drink in moderation, eat well beforehand, stay hydrated, don't mix with other alcohols, and get enough sleep. No wine, however natural it may be, can bypass these fundamentals.
The question of histamines
Some people are sensitive to histamines present in wine — mainly in red wines. Histamines are molecules produced by bacteria during malolactic fermentation. They can cause headaches, hot flashes, and nasal congestion. They have nothing to do with sulfites and can be present in both natural and conventional wines. If you are systematically affected by red wines but not whites, this is a path to explore with a doctor.
Our position at LET IT BiB
We won't tell you that our natural BIBs (bag-in-boxes) won't give you a hangover — that would be false and irresponsible. What we can say is that our wines are selected from winemakers who master their fermentations, do not add unnecessary inputs, and produce wines that are as "clean" as possible. What you do with them is your responsibility. And if you want to discover where to start to explore natural wine gently, our guide where to start with natural wine is here to help.
Frequently asked questions
Are headaches after red wine caused by sulfites?
Probably not, or at least not entirely. Conventional white wines contain as many or even more sulfites than reds — and they cause headaches less often. It is more likely that histamines and tannins in red wines are involved. A real sensitivity to sulfites manifests more often through respiratory problems than headaches.
Is natural white wine better tolerated than natural red?
Generally, yes — and not just because it is "natural." Whites contain fewer histamines and tannins than reds, which mechanically makes them easier for many people to digest. A 11% natural Chenin Blanc will almost always be easier to tolerate than a 13.5% natural red, for reasons independent of sulfur.
Drink less but better: does it really work?
Yes, and that is partly the message of natural wine. The idea is not to drink less to suffer less, but to drink wines that are worth savoring — which naturally leads to more conscious and moderate consumption. A quality BIB, consumed by the glass over 4 to 6 weeks, fits into this logic. To learn everything about the daily use of BIB, BIB questions answered addresses all your queries.