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  1. WebMD is a trusted source of health and medical information, with expert reviews, community support, and educational services. Find a doctor near you or browse health news.

  2. When your Apple Watch detects that you’ve fallen, three things will happen: Your watch will tap you on the wrist, sound an alarm, and create an alert message. The message will read, “It looks ...

  3. 2015年1月16日 · Get the nutrition lowdown on all your meals and everything in between. Find out the calories, carbs, fat, fiber, and more in over 37,000 foods and drinks. Whether you're eating out or dining in ...

  4. 2023年3月3日 · Normal: Lower than 80. Stage I: hypertension: 80-89. Stage II: hypertension: 90 or more. Hypertensive crisis: 120 or more. Call 911. Our chart below has more details. Even if your diastolic number ...

  5. 2023年7月10日 · It's usually one of the first tests taken during a comprehensive eye exam to determine how sharp your vision is. If someone has 20/20 vision, it means they can see the same amount of detail from ...

  6. 2023年9月1日 · These have two or more prescriptions to correct your vision. In the past, you could spot this type of lens by the line between the two sections. But today’s products often look seamless ...

  7. 2023年11月15日 · Acute onset atrial fibrillation. This rapid, chaotic heartbeat comes on quickly and goes away quickly. It usually resolves by itself in 24 to 48 hours. Causes include age, cardiovascular disease ...