Stress basics
Learning Center
HPV infection: How does it cause cervical cancer?
Cervical cancer is most often caused by a genital human papillomavirus (HPV) infection.
Hand swelling during exercise: A concern?
This condition is a common problem, but rarely serious enough to disrupt your routine.
Headaches and hormones: What's the connection?
Headaches are part of life for many people. Understand how hormones can play a role.
Hemorrhoids
There are many effective options for easing the discomfort of hemorrhoids — swollen veins in the anus and lower rectum.
Hepatitis C: How common is sexual transmission?
Although hepatitis C is highly contagious, the risk of sexual transmission is very low.
How opioid use disorder occurs
Opioids act on the brain in powerful and potentially dangerous ways. Find out why no one is safe from opioid use disorder and learn what raises the risk.
Hypothyroidism and infertility: Any connection?
For women, there's sometimes a link between having an underactive thyroid gland (hypothyroidism) and infertility.
Hypothyroidism: Can it cause peripheral neuropathy?
Hypothyroidism can cause damage to peripheral nerves and can lead to conditions such as carpal tunnel syndrome.
Is fibromyalgia hereditary?
Is fibromyalgia hereditary? The disorder appears to run in families.
Is stress to blame for hair loss?
Stress and hair loss can be related. Extreme stress could take a toll on your tresses. But any hair loss may be temporary. Be sure to talk to your doctor if you notice sudden or patchy hair loss or more than usual hair loss when combing or washing your hair.
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