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  1. 2023年8月21日 · Our bodies need selenium to work well, but there are risks to adding more to your diet, including: Side effects. Taken at normal doses, selenium doesn't usually have side effects. An overdose of ...

  2. When taken by mouth: Phosphatidylserine is possibly safe when used for up to 3 months. Phosphatidylserine can cause side effects such as insomnia and stomach upset, especially at doses over 300 mg ...

  3. 2021年10月31日 · 8 min read. A dental crown is a tooth-shaped "cap" that is placed over a tooth -- to cover the tooth to restore its shape and size, strength, and improve its appearance. The crowns, when cemented ...

    • Causes
    • Diagnosis
    • Symptoms
    • Treatment

    Many parts of your body -- including your eyes, brain, inner ear, and nerves in your feet and spine -- work together to keep you balanced. When a part of that system is off, you can feel dizzy. It can be a sign of something serious, and it can be dangerous if it makes you fall. Your inner ear is a complicated system of canals filled with fluid. The...

    Your doctor will look at all your symptoms and overall health to figure out what's going on and how to treat it.

    Get medical attention immediately if you're dizzy and you faint, fall, or can't walk or have any of the following: Does it feel like you're spinning or the room is moving around you? That's a classic sign of a particular type of dizziness called vertigo. It's more than feeling off-kilter and usually gets worse when you move your head. This is a sym...

    You'll feel it briefly when you tilt or turn your head, and especially when you roll over in bed or sit up. BPPV isn't serious and usually goes away on its own. If not -- or you'd like to help it along -- it can be treated with special head exercises (\"particle repositioning exercises\") called the Epley maneuver to get the pieces of calcium back ...

  4. 2023年9月19日 · This test checks the amount of certain antibodies called immunoglobulins in your body. Antibodies are proteins that your immune cells make to fight off bacteria, viruses, and other harmful ...

  5. 2023年5月22日 · A typical aPTT value is 30 to 40 seconds. If you get the test because you’re taking heparin, you’d want your PTT results to be more like 120 to 140 seconds, and your aPTT to be 60 to 80 ...

  6. 2023年10月17日 · Do you feel sick to your stomach and want to throw up? You may have nausea, a common symptom of many digestive disorders. Learn what causes nausea, how to treat it, and how to prevent it from ...