One area now attracting attention, according to Dr Mohammed Enayat, an NHS GP and founder of London-based longevity clinic HUM2N, is the health of the small intestine. But Dr Enayat says attention is increasingly turning to the lining of the small intestine itself. He told the Daily Mail: 'When we talk about the gut, we're talking about the small intestine in particular. 'The small intestine is responsible for absorbing from that liquid what it wants to take—the good stuff—and then the large intestine is responsible for excreting, getting rid of the waste product.' Leaky gut can cause mild symptoms for years before a full autoimmune condition develops—and becomes harder, if not impossible, to cure.

Source: Daily Mail January 04, 2026 15:33 UTC