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Vitamin B-12 and depression: Are they related?
Low levels of vitamin B-12 and other B vitamins may be linked to depression, but more research is needed.
Video: What happens during obstructive sleep apnea?
Sleep apnea — Watch this video to see how snoring and obstructive sleep apnea occur.
Video: Uterine fibroids treatment — Focused ultrasound
Uterine fibroids treatment with MRI and ultrasound — Relief is possible without surgery or drugs.
Video: The epidural block
Understand this anesthesia for labor and birth.
Video: Smoking — Anatomy of nicotine addiction
This animation illustrates how smoking changes your brain, causing nicotine addiction.
Video: Ovulation
Ovulation — the release of an egg from an ovary — occurs about midway through the menstrual cycle. See how it happens.
Video: Mammogram for breast cancer — What to expect
Watch video to see what it's like to have a mammogram, or breast cancer detection exam.
Video: Keratoconus
Scleral contact lenses may be an alternative to surgery for many patients with keratoconus.
Video: How irritable bowel syndrome affects you
Watch this irritable bowel syndrome video to learn how IBS can affect you.
Video: Heartburn and hiatal hernia
Watch this video to learn about heartburn and hiatal hernia.
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