Month: April 2014

Marijuana use may increase heart problems in young adults, especially if they are already at risk, authors of a small study say. The study was based on reports to a drug-abuse surveillance program in France. Doctors are required to report drug-abuse cases linked with serious health problems. Researchers looked at data for 2006 through 2010. In those years, 35 reported cases involved heart or blood vessel problems among marijuana users. The average age was 34. Nine of the 35 died. Nearly half had high blood pressure, high cholesterol or some other factor that increased their risk of heart disease. During the study years, heart disease cases rose from 1.1% to 3.6% of all reported problems in marijuana users. The cases included 20 heart attacks or symptoms indicating a strong risk of immediate heart attack.

People with diabetes may have potentially dangerous heart rhythm changes if their blood sugar drops very low at night, a new study finds. The findings may help to explain other research that has shown links between very low blood sugar (hypoglycemia) and sudden death, especially at night. The new study included 25 people with type 2 diabetes. All of them had heart disease or a high risk of developing it. All had been taking insulin for their diabetes for at least 4 years. Everyone wore devices for 5 days to continuously monitor their blood sugar and heart activity. Overall, people in the group had hypoglycemia for 134 hours during the 5 days. When this occurred at night, people were 8 times as likely to have a slow heart beat called bradycardia as they were when blood sugar was normal. Abnormal heart rhythms also were more likely to occur at night if blood sugar was low.

The “super bug” known as MRSA isn’t just in hospitals, prisons and locker rooms. A new study shows that it could be in your home, too. MRSA stands for methicillin-resistant Staphylococcus aureus. These staph bacteria are hard to kill because they resist most antibiotics. MRSA once was found mainly in hospitals and nursing homes. But in recent years it has spread to the community. Some people have been infected in close quarters, such as prisons and locker rooms. The new study focused on 161 New York City residents infected with MRSA. Researchers compared the genetic makeup of MRSA from these people with a group who were not sick. They also tested other household members and social contacts of both groups. Finally, they tested surfaces in people’s homes. They found that the homes of people with MRSA were “major reservoirs” of a MRSA strain called USA300.

In a study of 250 teenagers, most got less sleep than they needed. Teens in the study were from low- and middle-income families. They wore a device called an actigraph to measure their sleep for one week. They also kept sleep diaries. They recorded an average of 6.8 hours a night during the week. This rose to 8.7 hours a night during the weekend. But the actigraphs showed they actually slept less. The average nightly total was 6 hours during the week and 7.4 hours during the weekend. Black and male students slept less. The actigraphs showed that blacks and males also tended to wake or shift into a less-deep stage of sleep more often. This is called fragmented sleep. In their diaries, female students were more likely to report poor sleep quality. They also were more likely to say they felt sleepy in the daytime.