Gut Health in Charleston and Mt. Pleasant, SC

Reviewed by Ashley Harwyn, PA-C, ABAAHP  |  A4M Board Certified  |  Updated October 4, 2026

Bloating, cramps, and bowel changes deserve a real answer. Here is how IBS is recognized, which warning signs need prompt care, and which gut tests actually help.

Many people come to us after cutting foods, buying supplements, or ordering an online gut test, and still feel unwell. Our job is to find the cause, use the tests that answer a real question, and build a practical plan around food, sleep, stress, and, when it makes sense, nutrition support. We will also be direct about what popular gut tests can and cannot show, because some of them are sold well beyond their evidence.

• IBS is a real, common condition defined by repeated belly pain linked to changes in bowel habits, and it can be diagnosed from that pattern.[1][2]
• Blood in the stool, anemia, unexplained weight loss, fever, symptoms that wake you at night, onset after 50, or a family history of colon cancer, IBD, or celiac disease call for prompt evaluation.[2]
• For IBS with diarrhea, guidelines suggest a celiac blood test and a fecal calprotectin test to rule out celiac disease and inflammatory bowel disease.[1]
• Do not go gluten-free before celiac testing, because it can affect the results.[4]
• IgG food sensitivity panels have not been proven to identify problem foods, and an expert consensus found too little evidence to recommend routine microbiome stool testing.[5][6]
• Common first steps for IBS are practical: more fiber, a short and guided low FODMAP trial, better sleep, stress care, and gut-directed therapy.[1][7]

Symptoms that should be checked promptly

Some symptoms point away from IBS and toward conditions such as inflammatory bowel disease, celiac disease, or colorectal cancer. Researchers who studied 730 adults with suspected IBS at three hospitals in China tracked these warning signs, sometimes called alarm features.[2] Book a prompt medical evaluation, rather than trying another diet, if you notice any of the following:

• Blood in your stool, rectal bleeding, or hidden blood found on a stool test[2]
• Anemia (a low blood count) on recent lab work[2]
• Weight loss you did not try for, especially over the last few months[2]
• Fever along with your gut symptoms[2]
• Symptoms that wake you up at night[2]
• Symptoms that started after age 50[2]
• A family history of colorectal cancer, inflammatory bowel disease (Crohn's disease or ulcerative colitis), or celiac disease[2]

In that study, anemia, hidden blood in the stool, and unintended weight loss were the signs with the highest predictive value for a disease other than IBS.[2] The authors were careful to say that these signs identify people who need more testing; they do not rule IBS out on their own.[2]

Age matters in a second way. The US Preventive Services Task Force recommends colorectal cancer screening for adults at average risk starting at age 45.[3] That recommendation is for people without symptoms. If you are 45 or older and have new bowel changes, you need a proper evaluation of those symptoms, not just a routine screening reminder. If pain is severe, you are vomiting blood, or bleeding is heavy, do not wait for an office visit: go to an emergency department or call 911.

How IBS is recognized, and what else gets ruled out

Doctors use a set of criteria called Rome IV. In plain terms, IBS means belly pain at least one day a week over the last three months, linked to two or more of these: the pain relates to bowel movements, how often you go changes, or how your stool looks changes.[2] Symptoms should have started at least six months before the diagnosis.[2] The American College of Gastroenterology suggests making the diagnosis from this pattern, a “positive” diagnosis, because waiting to exclude everything delays treatment.[1]

That does not mean no testing. When diarrhea is the main problem, the same guideline suggests a blood test for celiac disease and a stool test called fecal calprotectin, which helps rule out inflammatory bowel disease.[1] Celiac blood tests look for antibodies that are often high in untreated celiac disease, and doctors typically confirm the diagnosis with small biopsies taken during an upper endoscopy.[4]

One practical point saves a lot of frustration. If celiac disease is a possibility, keep eating gluten until you are tested, because starting a gluten-free diet first can affect the results.[4] Testing first gives you a clear answer instead of a guess.

We also look at the rest of your health. We ask about your medicines, recent infections, stressful stretches, and other conditions, and when needed we run baseline labs as part of a good gut visit. If you also need a regular clinician for the rest of your care, our primary care service covers that too.

Tired of guessing what your gut is doing? Call 843-981-0870. We will go through your symptoms, order only the tests that answer a real question, and tell you plainly if you need a gastroenterologist.

Gut tests that help, and tests that mostly add noise

Some gut tests answer clear questions and are backed by guidelines. Others produce long, colorful reports that look precise but have not been shown to improve care.

We offer stool mapping and food sensitivity testing, so the bottom two rows deserve plain talk.

The American Academy of Allergy, Asthma and Immunology says IgG food panels have never been scientifically proven to do what they claim.[5] IgG to a food is most likely a normal response to having eaten it, and higher IgG4 levels may simply go along with tolerating that food.[5] The academy cautions against making big diet changes based on tests that have not been proven.[5] If you bring us a panel you already paid for, we will go through it with you, and we will not tell you to drop a food because of an IgG number.

In 2025, an international expert panel concluded there is not enough evidence yet to recommend routine microbiome testing in clinical practice.[6] The panel also discouraged ordering these tests without a clinician involved, and said any change in care based on results should come from the treating clinician, not the testing company.[6] So if we use stool mapping, it is one piece of context next to your history and standard tests. It does not diagnose a condition on its own, and its report does not set your treatment.

Building a plan that fits your gut and your week

Treatment for IBS usually starts with food and daily habits. The National Institute of Diabetes and Digestive and Kidney Diseases lists eating more fiber, trying a gluten-free trial, and following a low FODMAP eating plan as diet changes doctors may suggest.[7] It also notes that physical activity, less stress where possible, and enough sleep may help.[7]

A low FODMAP diet cuts back on a group of fermentable carbohydrates; the letters stand for fermentable oligosaccharides, disaccharides, monosaccharides, and polyols. The American College of Gastroenterology recommends a limited trial, not a lifelong diet.[1] In practice, that means cutting back for a few weeks, then adding foods back one at a time to learn your own limits. We guide that process and reintroduce fermented foods and fiber-rich vegetables at a pace your gut tolerates, so you eat as widely as possible.

Stress care is real treatment for IBS, not a side note. Cognitive behavioral therapy, gut-directed hypnotherapy, and relaxation training are all used for IBS.[7] The American College of Gastroenterology suggests gut-directed psychotherapy for overall IBS symptoms.[1] If anxiety or low mood is part of your picture, our mental health care can run alongside your gut plan.

What about probiotics and digestive enzymes? Researchers are still studying probiotics for IBS, and NIDDK advises talking with a clinician before starting them.[7] We use probiotics or digestive enzymes only when there is a specific reason, as a time-limited trial with a clear sign of whether it is working. If it is not helping, you stop paying for it. Any supplement we suggest is chosen for you, and our customized supplements service exists so you are not guessing in a store aisle.

When symptoms do not respond, prescription options exist. The guideline recommends specific medicines for IBS with constipation and IBS with diarrhea, including the antibiotic rifaximin for diarrhea-predominant symptoms.[1] We will tell you when a prescription is a better next step than another round of diet changes.

Seeing Ashley in Mount Pleasant or downtown

Your visit is with Ashley Harwyn, PA-C, who holds board certification in anti-aging and functional medicine through A4M and the ABAAHP credential. She takes time to hear the whole story: when symptoms started, what you eat, how you sleep, and what you have already tried. You can see her at our office at 496 Bramson Ct, Suite 120, in Mount Pleasant, or at The Longevity Club, 163 Rutledge Ave, Suite 202, in downtown Charleston.

We are clear about the edges of what we do. Crohn's disease and ulcerative colitis need a gastroenterologist, and anyone with warning signs needs the right workup from the right specialist. When that is the case, we help you get there quickly, and stay involved in the food, sleep, and stress side of your care.