Sleep
Learning Center
Nail ridges: Cause for concern?
Vertical nail ridges are common and often become more prominent with age.
Napping: Do's and don'ts for healthy adults
Napping can benefit your health. Find out how to make the most of a nap.
Ocular migraine: When to seek help
Flashes of light, zigzagging patterns and temporary blindness — what does it all mean?
Oral health: A window to your overall health
Find out about the link between your oral health and overall health.
Ovulation signs: When is conception most likely?
Trying to get pregnant? Learn about symptoms of ovulation
Passive-aggressive behavior: What are the red flags?
Learn about the signs of this indirect way of expressing negative feelings.
Placenta: How it works, what's normal
Understand how this pregnancy organ works and what conditions can affect it.
Poppy seed tea: Beneficial or dangerous?
Poppy seed tea may be used as a natural pain reliever. The key is the opioids in the seed coating, which may be dangerous.
Premenstrual dysphoric disorder: Different from PMS?
Extreme moodiness, intense sadness or marked irritability in the days before your period — along with your usual PMS symptoms — could be PMDD.
Reactive hypoglycemia: What can I do?
Reactive hypoglycemia is low blood sugar that happens after eating.
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