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The American Academy of Pediatrics created guidelines regarding physical activity and screen time (television, video games): boys should take at least 11,000 steps a day; 2) girls at least 13,000 steps a day; 3) children should limit total screen time to two hours a day. A new study evaluates these recommendations and the combined influence of screen time and physical activity on a child's risk of being overweight.

Researchers have shown that the investigational drug triphendiol causes cell death in pancreatic and bile duct cancer cell lines, slows tumor growth and sensitizes tumors to chemotherapy treatments. Scientists assessed the potential of triphendiol as a treatment for pancreatic adenocarcinoma using three representative cell lines.

Using a rodent model of epilepsy, researchers found one of the body's own neurotransmitters released during seizures, glutamate, turns on a signaling pathway in the brain that increases production of a protein that could reduce medication entry into the brain. Researchers say this may explain why approximately 30 percent of patients with epilepsy do not respond to antiepileptic medications.

People with high blood pressure appear to be less likely to have migraine than those with low blood pressure. Researchers say stiff arteries associated with high blood pressure may play a role in protecting against migraine.

If clumps of your hair start to fall out from a common form of baldness, a new review of existing research unfortunately offers little comfort. Patients who are afflicted by the condition known as alopecia areata -- patchy hair loss -- should understand that there is no reliable, safe, effective, long-term treatment.

Tumors use the body's blood system for their own purposes: They stimulate the growth of blood vessels that supply the tumor. Medical treatment blocks this process in order to restrain tumors. Scientists have now developed a method for producing a complex human vascular system in mice.

Fasting during the month of Ramadan raises the risk of a rare type of stroke, according to new research. Over one billion Muslims fast worldwide during the month of Ramadan. Other studies have shown that fasting during Ramadan does not affect the rate of arterial stroke. This study looked at cerebral venous sinus thrombosis, a rare type of stroke that most often affects young adults and children and is more common in women.

Asthma sufferers might as well stop wasting energy and money on labor-intensive or costly interventions to get rid of household dust. Expensive vacuum cleaners, special mattress covers, chemical methods -- they don't work against dust mites, a review of studies finds.

Researchers have found that, in animal studies, a synthetic form of active vitamin D has a substantive preventive effect on the development of both estrogen receptor (ER)-positive and ER-negative breast cancers. Unlike many of the other synthetic vitamin D agents that have been tested in humans, this compound, known as Gemini 0097, shows no toxicity, they report. The research team found that daily injections of Gemini 0097 cut growth of ER-positive cancer by 60 percent in rat studies, and reduced ER-negative breast cancer by half in mice.

If lung cancer and heart disease aren't enough, cigarette smokers are also at higher risk for developing, among other things, pancreatic cancer. Now, researchers have preliminary evidence indicating one possible reason why. The scientists show that nicotine in cigarettes increases the production of a protein that promotes cancer cell survival, invasion and spread.