Bloating is a frequent and often frustrating symptom: a feeling of fullness, tightness or visible swelling of the abdomen that can follow meals. Many people assume that eating “healthy” eliminates bloating, but persistent discomfort can arise from several factors beyond diet quality alone. Understanding the role of the gut microbiome is important. Trillions of microbes in the digestive tract help break down food and regulate gas production and inflammation. When this community is imbalanced (dysbiosis), normal fermentation of carbohydrates can produce excess gas and discomfort. Because microbiome composition varies widely between individuals, dietary patterns that benefit one person may cause bloating in another. A common explanation is a gut–diet mismatch: foods classed as healthy—high-fiber vegetables, whole grains, or fermented products—may be poorly tolerated depending on a person’s microbial profile. Rather than a one-size-fits-all plan, matching food choices to your digestion can reduce symptoms. For more background on individualized gut relationships, see how the gut microbiome relates to skin and hair health and how gut health impacts sleep and energy. Food sensitivities and intolerances are frequent culprits. Sensitivities may involve immune-mediated reactions that cause inflammation and bloating, while intolerances (for example, lactose or difficulty digesting certain fermentable carbohydrates) stem from enzymatic or microbial limitations. Identifying triggers commonly involves keeping a symptom diary, structured elimination and reintroduction, or targeted testing. For those exploring testing options, informational resources such as microbiome test descriptions can clarify what is measured. Hydration and bowel function are often overlooked. Adequate fluid intake helps maintain stool consistency and supports regular transit. Dehydration can slow digestion and contribute to constipation, which in turn increases bloating. Watch for signs such as dark urine or dry mouth, and consider gradual increases in water and electrolyte balance to support digestion. Stress and eating behavior also influence bloating. Stress hormones alter gut motility and can shift microbial balance, increasing gas and discomfort. Rapid eating, large portion sizes, and inadequate chewing introduce excess air and overload digestive processes. Slower meals, mindful chewing, and consistent meal timing can help the gut handle normal amounts of fiber and fermentable substrates. Because people’s microbiomes differ, personalized insight can be helpful. Laboratory-based microbiome analysis can reveal specific bacterial patterns linked to gas production or fiber fermentation and guide adjustments that reduce bloating. For readers seeking an introduction to targeted approaches, see [this guide on persistent bloating](https://www.innerbuddies.com/blogs/gut-health/why-you-re-still-bloated-even-with-a-healthy-diet-key-bloating-causes-explained). In summary, persistent bloating despite a healthy diet often reflects a mix of microbiome differences, food intolerances, hydration status, stress, and eating habits. An evidence-based, individualized approach that considers microbiome variation, targeted identification of triggers, and practical digestion-supporting habits tends to be more effective than generic dietary rules.