23/10/2026
医生,我老婆说我再放屁就要离婚了!💨😂
今天门诊来了一位大叔,坐下第一句就说:
"医生,我时常放屁,我老婆说快要跟我离婚了。"
我问他一天大概放几次。
他认真想了一下:"十几二十次吧。"
我跟他说:
"以医学来说,这个数字很正常。"
一个健康的人,一天放屁十几次很常见,二十多次也还算在正常范围。一整天排出来的气体加起来,大约有半升到一升多。
当然,太太受不受得了,是另外一回事。😂
有些屁,是你自己吞进去的
我再问他:"平时喝不喝汽水?"
他有点不好意思:"午餐、晚餐都配一罐。"
肠道里的气体,有一部分是我们自己吞进去的。吃太快、边吃边讲话、嚼口香糖、喝汽水,空气都会跟着进到肚子里。有些从上面打嗝出来,有些就一路往下走,从另一个出口离开。
经常胀气的人,不妨先从慢慢吃饭、少喝气泡饮料开始。
剩下的,是细菌的功劳
有些碳水化合物在小肠没有被完全消化吸收,例如豆类、燕麦、地瓜和洋葱里的某些成分。它们进入大肠后,就成了细菌的食物。细菌一发酵,气体就产生了。
我问大叔最近饮食有没有改变。
他说:"我老婆最近叫我多吃燕麦和豆。"
我没敢说出口:
凶手可能就在家里。
有一项小型研究,让受试者改喝不含纤维的配方饮食,结果排气量减少了大约七成。
不过,这只是研究实验,可不是我建议大叔用来挽救婚姻的方法。毕竟,为了少放几个屁,把对肠道有益的纤维也戒掉,实在不划算。
只是有些纤维比较容易被细菌发酵。如果你最近开始吃得很健康,结果屁反而变多了,那可能是肠道细菌终于吃饱了,在跟你说谢谢。😂
多吃纤维,一开始会胀,正常吗?
有可能。
尤其是突然增加大量豆类、全谷物或其他容易发酵的纤维时,肠道可能一时适应不来。部分人的腹胀会随着时间慢慢改善,但每个人的耐受程度不同。
纤维最好一点一点增加。不要今天突然决定做健康人,一餐就吃三碗豆。
🤢 那为什么有些屁特别臭?
其实,屁里面绝大部分的气体都是没有味道的。
真正让人想离婚的,是其中少量的含硫气体,例如硫化氢。它们只占很小一部分,却非常有「存在感」。
某些富含硫的食物,以及肠道细菌的代谢,都可能影响屁的味道。屁臭本身,不代表肠胃一定有问题。
喝奶就胀,是肠胃差吗?
不一定。
全世界大约三分之二的成年人,都有不同程度的乳糖吸收不良,亚洲人尤其常见。简单来说,就是身体里的乳糖酶不够,牛奶里的乳糖消化不完,又变成细菌的食物。
不过,有乳糖吸收不良,不代表每个人喝奶都会不舒服。如果喝牛奶容易腹胀、放屁或腹泻,可以试着减少分量、改喝无乳糖牛奶,或者选乳糖含量较低的硬奶酪。
不一定需要完全戒掉所有乳制品。
便秘的人,也特别容易胀
便秘时,肠道内容物排出得比较慢,加上气体排出不顺和肠道敏感度等因素,就更容易觉得肚子胀。
研究发现,功能性便秘的人,绝大多数都有腹胀的困扰。
把排便顾好,部分人的腹胀也会跟着改善。
⚠️ 什么时候真的要看医生?
放屁多本身通常不是严重问题。
但如果症状突然明显改变、持续影响生活,或者同时出现:
1)体重莫名下降
2)大便带血
3)不明原因的缺铁性贫血
4)持续腹痛
5)排便习惯明显改变
就不要只靠自己调整饮食,应该找医生检查。
无论几岁,都不应该忽略这些警讯。
回到那位大叔。
听完解释,他终于松了一口气。
然后很认真地问我:
"医生,你可以写一张医生证明给我老婆看吗?"
我说:
"证明就不用了。你回家先把那两罐汽水戒了,吃饭慢一点."
"其他的,就请太太多多包涵。"
💬 你家有没有一位特别爱放屁的人?不用点名,大家心里知道就好。🤣
------------------------------------------------------------------------
“Doctor, my wife says she’ll divorce me if I keep farting!” 💨😂
A man walked into my clinic today, sat down, and the first thing he said was:
“Doctor, I fart all the time. My wife says she’s about to divorce me.”
I asked him how many times a day.
He thought about it seriously. “Ten, twenty times?”
I told him:
“Medically, that’s perfectly normal.”
A healthy person can easily pass gas a dozen-plus times a day, and twenty-something still falls within the normal range. Add it all up and that’s somewhere between half a litre and over a litre of gas a day.
Whether his wife can tolerate it is a different matter, of course. 😂
Some of it, you swallowed yourself
Then I asked, “Do you drink soft drinks?”
He looked a bit sheepish. “One can with lunch, one with dinner.”
Part of the gas in our gut is air we swallow.
Eating too fast, talking while eating, chewing gum, drinking fizzy drinks: air goes down with all of them. Some comes back up as a burp. The rest travels all the way down and leaves through the other exit.
If you’re often bloated, start by eating more slowly and cutting back on fizzy drinks.
The rest is the bacteria’s handiwork
Some carbohydrates aren’t fully digested and absorbed in the small intestine, such as certain components in beans, oats, sweet potatoes and onions. Once they reach the large intestine, they become food for bacteria. The bacteria ferment them, and that’s where the gas comes from.
I asked him if his diet had changed recently.
He said, “My wife’s been telling me to eat more oats and beans.”
I didn’t dare say it out loud:
The culprit might be living in his own house.
One small study had participants switch to a fibre-free formula diet, and the amount of gas they passed dropped by about 70%.
That said, it was a research experiment, not something I’d recommend to save his marriage. Giving up gut-friendly fibre just to fart a little less really isn’t worth it.
Some types of fibre are simply easier for bacteria to ferment. So if you’ve started eating healthier and you’re suddenly farting more, it may just be your gut bacteria finally getting a proper meal and saying thank you. 😂
More fibre, more bloating at first. Is that normal?
It can be.
Especially if you suddenly add a lot of beans, whole grains or other easily fermented fibre, your gut may need time to adjust. For some people the bloating eases over time, but everyone’s tolerance is different.
Increase fibre bit by bit. Don’t wake up one day, decide to become a healthy person, and eat three bowls of beans in one meal.
🤢 So why do some farts smell so bad?
Most of the gases in a fart actually have no smell at all.
The real marriage-wreckers are a small amount of sulphur gases, such as hydrogen sulphide. They make up only a tiny fraction, yet they have a very strong presence.
Sulphur-rich foods and the way your gut bacteria break things down can both affect the smell. A smelly fart on its own doesn’t mean something is wrong with your gut.
Bloated after milk? Is your stomach weak?
Not necessarily.
Around two-thirds of adults worldwide have some degree of lactose malabsorption, and it’s especially common among Asians. Simply put, the body doesn’t make enough lactase, so the lactose in milk isn’t fully digested and ends up as food for bacteria.
Having lactose malabsorption doesn’t mean everyone feels unwell after milk, though. If milk tends to give you bloating, gas or diarrhoea, try a smaller amount, switch to lactose-free milk, or go for hard cheeses, which are naturally low in lactose.
You don’t necessarily have to give up dairy altogether.
Constipation makes bloating worse too
When you’re constipated, things move through the gut more slowly. Add gas that doesn’t clear as easily and a more sensitive gut, and bloating becomes much more likely.
Studies show that the vast majority of people with functional constipation struggle with bloating.
Sort out your bowel habits, and for some people the bloating improves along with it.
⚠️ When should you actually see a doctor?
Frequent farting by itself usually isn’t serious.
But if your symptoms change suddenly, keep affecting your daily life, or come with any of these:
1)Unexplained weight loss
2)Blood in the stool
3)Unexplained iron-deficiency anaemia
4)Persistent abdominal pain
5)A noticeable change in bowel habits
Don’t rely on tweaking your diet alone. See a doctor and get checked.
Whatever your age, these warning signs shouldn’t be ignored.
Back to our uncle.
After hearing all this, he finally breathed a sigh of relief.
Then he asked me, very earnestly:
“Doctor, can you write me a medical certificate to show my wife?”
I said:
“No need for a certificate.
Go home, quit those two cans of soft drinks, and eat more slowly.”
“As for the rest, your wife will just have to be understanding.”
💬 Is there someone in your house who farts a lot? No need to name names. We all know who it is. 🤣
You matter. Always.
你,很重要。一直都是。
The Good Life Project