A Gastro Said Her Colon Looked “Pristine” After She Made This Change

Reported by MindBodyGreen.

Cynthia Thurlow, a nurse practitioner and author of The Menopause Gut, walked into her colonoscopy appointment expecting the usual report: a bit of inflammation, maybe some hemorrhoids—the digestive equivalent of a participation trophy for aging. What she got instead was her gastroenterologist practically speechless. After reviewing 20 years of her screening history, he asked what she'd changed. When she told him, he delivered a compliment most of us will never hear: "I wish every person's colon looked as pristine as yours."

The shift between Thurlow's 2020 and 2025 results was dramatic enough to alarm her doctor—in the best way. The culprit? She'd radically increased her fiber intake. According to MindBodyGreen, this isn't just about digestive comfort. As estrogen and progesterone tank during perimenopause and menopause, your body produces fewer short-chain fatty acids (SCFAs)—the signaling molecules your microbiome creates when it ferments fiber. These molecules reduce inflammation, regulate GLP-1 production naturally, and protect your gut barrier. A 2025 study of over 7,700 postmenopausal women found that those eating the most fiber had significantly lower cardiovascular mortality compared to their low-fiber counterparts.

The fiber gap is real

Most Americans are eating around 10 grams of fiber daily. We should be hitting 25 to 30. When your microbiome doesn't have enough fiber to work with, it can't manufacture those protective molecules, and inflammation fills the void. But here's where people sabotage themselves: jumping from 10 to 30 grams overnight is a fast track to bloating and gas. Your gut bacteria need time to build capacity. Gradual increases—adding lentils to grain bowls, tossing beans on salads, blending a tablespoon each of flax and chia seeds into smoothies—give your system space to adapt without the digestive drama.

The message isn't that fiber will magically fix everyone's gut. But for the majority of us running on empty, the simple act of adding legumes, seeds, and whole grains to meals is concrete, doable, and backed by real results—even if your next colonoscopy is years away.

Read the original at MindBodyGreen.