Mental Health & Wellness > Wellness Matters

A gastroenterologists says this 1 supplement is worth every penny

By MDLinx staff

Published May 2, 2025

Key Takeaways

Industry Buzz

"In most cases, the supposed benefits of supplements popularized on social media aren’t backed by strong data. But there is one supplement that robust studies have consistently shown may lower our cholesterol, dampen glucose spikes, help us stay full longer, and even aid in treating constipation and diarrhea—all while serving our microbiome a sweet, sweet feast." — Gastroenterologist Trisha Pasricha, MD, MPH @trishapasrichamd

In a recent Instagram reel, Trisha Pasricha, MD, MPH, a Harvard-trained gastroenterologist, shared her glowing endorsement of a supplement that’s been gaining traction among healthcare professionals: psyllium husk.

As a supplement frequently used for digestive health, psyllium husk is more than just a fiber supplement. It’s one that gastroenterologists should keep an eye on, especially given its broad range of potential benefits for patients with diverse GI needs.

"In most cases, the supposed benefits of supplements popularized on social media aren’t backed by strong data," Dr. Parisha shares in the video caption. "But there is one supplement that robust studies have consistently shown may lower our cholesterol, dampen glucose spikes, help us stay full longer, and even aid in treating constipation and diarrhea—all while serving our microbiome a sweet, sweet feast: psyllium husk."

The case for psyllium husk in GI care

Psyllium husk is a soluble fiber derived from the seeds of the Plantago ovata plant, commonly used to treat constipation and support regular bowel movements. However, Dr. Pasricha's recommendation sheds light on why this humble supplement deserves a place in modern gastroenterology practice—its impact stretches far beyond simple fiber supplementation.

In her video, Dr. Pasricha highlights that psyllium can be particularly beneficial for patients with irritable bowel syndrome (IBS), a disorder often marked by alternating bouts of diarrhea and constipation. Psyllium works as an osmotic laxative, drawing water into the stool to soften it and regulate bowel movements, making it a potent tool in managing the constipation aspect of IBS. For patients suffering from IBS-D (diarrhea-predominant), psyllium may offer relief by firming up stools and reducing urgency.

A multi-faceted supplement

Beyond IBS, Dr. Pasricha mentions that psyllium husk can also support heart health, an often-overlooked benefit in the gastroenterology space. Psyllium is clinically proven to help lower cholesterol levels, particularly LDL ("bad" cholesterol). By binding to bile acids, psyllium helps the body excrete cholesterol, providing an additional cardiovascular benefit for patients who may already be at risk due to obesity, metabolic syndrome, or type 2 diabetes.

Another intriguing benefit of psyllium, according to Dr. Pasricha, is its role in gut microbiota modulation. Psyllium is a prebiotic, which means it helps feed the good bacteria in the gut. This is particularly important for patients with dysbiosis—an imbalance of gut bacteria. By supporting a healthy microbiome, psyllium may help improve overall gut health, and in turn, potentially mitigate systemic inflammation and gastrointestinal discomfort.

In the clinic

While the evidence for psyllium is compelling, there are a few key considerations gastroenterologists should keep in mind when recommending this supplement:

Dosage: Dr. Pasricha suggests a typical starting dose of 1 to 2 teaspoons daily, which can be gradually increased based on patient tolerance. It's important to remind patients to drink plenty of water when taking psyllium to avoid any risk of obstruction.
Patient education: Some patients may experience bloating or gas initially. It's helpful to explain that this can be a temporary effect as the body adjusts to the increased fiber intake. Starting with smaller doses can help mitigate this.
Long-term use: Psyllium is generally safe for long-term use, but it’s always wise to monitor patients, especially those with pre-existing GI conditions like strictures, diverticulosis, or IBD, as fiber supplementation may need to be tailored to each patient's unique needs.

Psyllium husk is a versatile, evidence-backed supplement with a role to play in gastroenterology beyond simple bowel regularity. Its benefits for IBS management, cholesterol reduction, and gut microbiome support make it an option worth considering for patients dealing with a range of GI concerns. Recommending this supplement and showing patients how to use it properly can really help gastroenterologists boost their patients' digestive health—and overall well-being.