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Sugar intake during antibiotic use may further damage gut microbiome

Medical research suggests that consuming sugar while taking antibiotics could compound damage to beneficial gut bacteria. The combination may worsen the microbiome disruption typically caused by antibiotic treatment alone.

LSN World News · 1 October 2026

Consuming sugar while undergoing antibiotic treatment may exacerbate harm to the gut microbiome, according to emerging medical evidence. Antibiotics are known to disrupt the balance of beneficial bacteria in the digestive system, and new findings indicate that dietary sugar intake during this period could amplify this negative effect.

The human gut microbiome plays a crucial role in digestive health, immune function, and overall wellbeing. When patients take antibiotics to combat infections, these medications inadvertently kill both harmful and beneficial bacteria, often resulting in an imbalanced microbiome that can persist for weeks or months.

Researchers have identified sugar as a potential compounding factor in this disruption. High sugar consumption during antibiotic courses may further compromise the recovery and diversity of gut bacteria populations, potentially prolonging the negative health effects associated with antibiotic use.

Health professionals recommend that patients taking antibiotics exercise caution with their dietary choices, particularly regarding sugar consumption. Those undergoing antibiotic treatment may benefit from consulting healthcare providers about optimal nutrition strategies to minimize microbiome damage and support the restoration of healthy bacterial populations.