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  2. Lactose intolerance - Wikipedia

    en.wikipedia.org/wiki/Lactose_intolerance

    In a hydrogen breath test, the most accurate lactose intolerance test, after an overnight fast, 25 grams of lactose (in a solution with water) are swallowed. If the lactose cannot be digested, enteric bacteria metabolize it and produce hydrogen, which, along with methane, if produced, can be detected on the patient's breath by a clinical gas ...

  3. Hydrogen breath test - Wikipedia

    en.wikipedia.org/wiki/Hydrogen_breath_test

    The patient is then given a small amount of pure lactose (typically 20 to 25 g), and then required to take readings every 15, 30 or 60 minutes for two to three hours. If the level of hydrogen rises above 20 ppm (parts per million) over the lowest preceding value within the test period, the patient is typically diagnosed as a lactose malabsorber ...

  4. Alfred Wöhlk - Wikipedia

    en.wikipedia.org/wiki/Alfred_Wöhlk

    With his historical detection reaction from 1904, the lactose content of dairy products can be visualized. [2] This is useful because many people are lactose intolerant and avoid dairy products. Countless pharmacy students, but also physicians, laboratory assistants, and recently also chemistry teachers know the Wöhlk test. [3]

  5. Lactase persistence - Wikipedia

    en.wikipedia.org/wiki/Lactase_persistence

    Lactose solution is then given to the subjects to drink, and blood glucose levels are checked at 20 minute intervals for an hour. The subjects who show a substantial rise in their blood glucose level are considered lactose tolerant. [22] A hydrogen breath test is often used to detect lactose intolerance. [citation needed]

  6. NHS dentistry - Wikipedia

    en.wikipedia.org/wiki/NHS_dentistry

    When the NHS was established in July 1948 dental treatment was free. Demand on the service was enormous. About a quarter of the dentists joined the NHS and by November 1948 83% had joined. Dental health in the UK was worse than that of Germany. In the first nine months of the NHS 4.5 million teeth were removed and 4.2 million teeth were filled.

  7. Fecal pH test - Wikipedia

    en.wikipedia.org/wiki/Fecal_pH_test

    The test is fast and can be performed in a doctor's office. A patient must not be receiving antibiotics. At least half a milliliter of feces is collected, and a strip of nitrazine paper is dipped in the sample and compared against a color scale. A pH of less than 5.5 indicates an acidic sample. [5]

  8. Non-celiac gluten sensitivity - Wikipedia

    en.wikipedia.org/wiki/Non-celiac_gluten_sensitivity

    Reported symptoms of NCGS are similar to those of celiac disease, [30] [31] with most patients reporting both gastrointestinal and non-gastrointestinal symptoms. [29] [32] In the "classical" presentation of NCGS, gastrointestinal symptoms are similar to those of irritable bowel syndrome, and are also not distinguishable from those of wheat allergy, but there is a different interval between ...

  9. Milk allergy - Wikipedia

    en.wikipedia.org/wiki/Milk_allergy

    Milk allergy is distinct from lactose intolerance, which is a nonallergic food sensitivity caused by the lack of the enzyme lactase in the small intestines to break lactose down into glucose and galactose. The unabsorbed lactose reaches the large intestine, where resident bacteria use it for fuel, releasing hydrogen, carbon dioxide and methane ...

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