Several past studies have found health impacts of working irregular shifts, such as an increased risk for heart disease. And a new study may have found some negative long-term mental effects of shift work.

After reports last week that the rate of new Ebola cases in Liberia was slowing, new reports indicated a spike in cases in Guinea and Sierra Leone. Meanwhile, Texas, where a few cases broke out in October, hasn't seen a new case in 21 days.

Past research has found that depression and stress can shorten patients' life spans. But can happiness and life satisfaction extend them?

Premature birth can lead to serious health consequences for newborns. And new research shows that the mother's mental health status may raise the risk of early delivery.

Cosmetic skin procedures have become more common in recent years. But are they dangerous? Probably not, a new study suggests.

Alcohol and smoking are known risk factors for cancer of the mouth. Now, new research suggests that mouth irritants like dentures or sharp teeth may share some of the blame.

Labeled as smart eyewear, Google Glass lets users search photos, take calls, send messages and watch videos. But the high-tech glasses may also hinder users' vision.

Pap tests have saved many lives by detecting cervical cancer early. But, according to new research from the Centers for Disease Control and Prevention (CDC), millions of women may not be getting screened for this disease.

Chemotherapy, radiation and surgery are all common ways to fight breast cancer. While complementary therapies may not directly treat cancer, many may relieve related worry and stress.

Arthritis can be painful and prevent patients from doing daily activities. But certain medicines to relieve arthritis pain may increase patients' chances of dying from a stroke, a new study found.