Why does pregnant woman's poop smell so bad? Uncovering the scientific reasons for intestinal changes during pregnancy
Recently, the topic of pregnant women's health has sparked heated discussions on social media. Among them, "Why does pregnant women's poop smell so bad?" has become a frequent discussion point among pregnant mothers. This article combines the popular data of the entire network in the past 10 days to analyze this phenomenon from a scientific perspective and organizes it into structured content for readers’ reference.
1. Statistics of hot topics on the entire network in the past 10 days

| keywords | Search volume (daily average) | Main discussion platform |
|---|---|---|
| constipation in pregnant women | 12,000 times | Xiaohongshu, Zhihu |
| Gut health during pregnancy | 8000 times | Weibo Maternal and Infant Super Chat |
| Changes in stool odor | 6500 times | Baidu Knows, Baby Tree |
2. Three major reasons why pregnant women’s feces smells worse
1. Changes in hormone levels
Progesterone (such as progesterone) will slow down intestinal peristalsis, causing food residues to stay in the colon longer, allowing bacteria to ferment more fully and produce more sulfides and ammonia, thereby aggravating the odor.
2. Adjustment of diet structure
Pregnant women often supplement high-protein foods (such as eggs, milk) and iron supplements. These substances will produce compounds with strong odors after metabolism. For example:
| food/supplements | Metabolites | Odor characteristics |
|---|---|---|
| red meat | Indole, skatole | Smell of corruption |
| iron supplement | hydrogen sulfide | Rotten egg smell |
3. Imbalance of intestinal flora
During pregnancy, the proportion of probiotics in the intestines may decrease, and the reproduction of harmful bacteria accelerates, causing the pH value of the feces to increase and releasing more irritating gases.
3. Improvement suggestions (based on summary of recent popular discussions)
1.Increase dietary fiber: Daily intake of 25-30g (such as oats, apples) can promote intestinal peristalsis.
2.Supplement probiotics: Yogurt and fermented food can adjust the balance of bacterial flora.
3.drink more water: 1.5-2L water per day to dilute metabolic waste concentration.
4.Avoid sitting for long periods of time: Get up and move for 5 minutes every hour to reduce intestinal stasis.
4. Excerpts of hotly discussed opinions among netizens
"The third trimester of pregnancy is like a biochemical weapon... The doctor said it was due to the iron supplement, but it did get better after stopping taking it." - Weibo user @pregnant mother Xiaoqi
“The effect of eating prunes is immediate and I recommend it to all sisters!” - Xiaohongshu user #梦生experience sharing
Summary: Changes in the odor of pregnant women’s bowel movements are the result of a combination of factors, so there is no need to be overly anxious. If it is accompanied by symptoms such as abdominal pain and bloody stools, you should seek medical treatment in time to investigate pathological factors.
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