SIBO (Small Intestinal Bacterial Overgrowth) in Los Angeles

The small intestine has natural defenses against bacterial colonization, including gut motility, stomach acid, and immune surveillance. When these break down, bacteria establish themselves where they don't belong. Common contributors include impaired motility, low stomach acid, prior abdominal surgery, chronic use of acid-suppressing medications, hypothyroidism, and immune dysfunction.

Recurrence is one of the most common challenges in SIBO management. Without correcting the underlying condition that allowed overgrowth to develop, symptoms frequently return after antibiotics end. Prevention requires identifying root causes and, where appropriate, using prokinetic agents, dietary strategies, and ongoing monitoring.

Yes. Bacterial byproducts from the small intestine enter the bloodstream and can drive systemic symptoms including fatigue, brain fog, joint pain, rosacea, and mood disturbances. SIBO-related nutrient depletion compounds these effects further.

The small intestine is where most nutrient absorption occurs. Bacterial overgrowth damages the mucosal lining and competes for key nutrients, impairing absorption of fat-soluble vitamins, B12, iron, and zinc. The resulting deficiencies can produce fatigue, immune dysfunction, and symptoms with no obvious digestive connection.

Diet reduces the fermentable carbohydrates that feed bacteria but rarely eradicates the overgrowth on its own. Most patients require targeted antimicrobials, pharmaceutical or herbal, to meaningfully reduce bacterial burden. Elemental diets, which are absorbed before reaching colonized areas of the intestine, may also be used as a primary intervention in certain cases.

FODMAPs are fermentable carbohydrates that bacteria in the small intestine readily ferment, producing the gas and bloating characteristic of SIBO. The low FODMAP diet starves bacteria of that substrate and can significantly reduce symptoms. It is typically followed for six to twelve weeks, then unwound gradually through a structured reintroduction phase to identify personal triggers.

Yes. SIBO has been linked to fibromyalgia, rosacea, restless leg syndrome, and certain inflammatory and autoimmune conditions, likely through immune activation, systemic inflammation, and nutrient depletion. Many patients with these diagnoses improve meaningfully when underlying SIBO is identified and treated.

Bacterial overgrowth damages the intestinal lining and loosens the tight junctions between cells, increasing permeability. This allows bacterial toxins and inflammatory compounds to enter the bloodstream, driving immune activation throughout the body. SIBO and leaky gut frequently coexist and reinforce each other, which is why repair protocols often need to address both.

Hydrogen sulfide SIBO is a subtype in which bacteria produce hydrogen sulfide rather than the hydrogen or methane that standard lactulose breath tests measure. Symptoms include diarrhea, a distinctive gas odor, and brain fog. Because it goes undetected by routine testing, speak with Dr. Lalezar about whether additional evaluation is warranted based on your symptom profile.

Risk is elevated in patients with a history of abdominal surgery, chronic acid-suppressing medication use, hypothyroidism, diabetes, immune deficiency, or connective tissue disorders. Prior food poisoning or gastroenteritis can damage the nerve cells that control gut motility, increasing vulnerability significantly. Patients with longstanding IBS-like symptoms that have never been thoroughly investigated are also frequently found to have SIBO as an underlying driver.