Gastroenterologist explains gut dysbiosis, reveals 6 symptoms: Brain fog, constipation
admin | September 19, 2025 5:22 PM CST

Gut wellness is very often talked about in the discourse of health. Gut microbiome forms a cornerstone of the gut's functioning, and any imbalance affects overall gut and overall health.
One of the conditions is gut dysbiosis, which happens when there's an imbalance in the gut microbiome, the living community of microbes in the gut.
Dr Gurbakhshish Singh Sidhu, senior consultant- medical gastroenterology at Manipal Hospital, Patiala, told HT Lifestyle that gut microbiome, when it goes out of balance, may even disrupt digestion, nutrient absorption, and immune response.
He added, "Gut dysbiosis is an imbalance in the gut microbiota, your gut's ensemble of bacteria, viruses, and fungi. Clinically, it happens when harmful microbes outnumber helpful microbes, leading to a disruption in digestion, nutrient absorption, and immune response."
Some of the reasons why gut dysbiosis happens, as the gastroenterologist revealed, "A few examples would be a history of multiple antibiotics, a poor diet, long-term stress, acute infectious disease processes, and certain medications."
Who are most vulnerable?
Here are the people who are at most risk of this issue, as shared by Dr Sindhu:
Here are the 6 common signs which may indicate poor gut microbiome, as listed by the gastroentrologist:
- Poor dietary habits.
- Chronic illnesses, such as diabetes, obesity, and autoimmune disorders.
- Frequent antibiotic users.

- Bloating and gas: Excess gas production and abdominal distention due to an imbalance in gut microbes.
- Constipation or diarrhoea: Irregular bowel movements
- Frequent infections: Weakened immune function as gut-healthy bacteria decline.
- Fatigue: Poor absorption of nutrients that have an impact on your energy levels.
- Brain fog: Effect on cognitive function.
- Skin problems: Acne or eczema, due to inflamed gut health.
- Eat a fibre-rich diet such as whole grains, apples, pears, broccoli, carrots, sweet potatoes, beans, lentils, almonds, oats, etc, to support beneficial bacteria
- Include probiotics in the diet, like yoghurt or fermented foods.
- Minimise processed foods and sugar in your diet to limit the stimulation of harmful bacteria.
- Stay hydrated, as water supports digestion and helps in maintaining gut health
- Avoid unnecessary antibiotics
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