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Younger, unmarried men are the least likely group in the world to be aware if they have high blood pressure, a new study finds. They’re also least likely to get treatment. Rural residents of low-income countries also were less likely to know they had high blood pressure or to get treated. The study included 150,000 people. They were from 17 countries in North and South America, Europe, Asia and Africa. People were given blood pressure tests. Just over half of those from high-income countries who had high blood pressure were aware of it. Awareness was similar in rural and urban areas. But in low-income countries, rural residents were less aware. Fewer than half of those who had high blood pressure realized it. In high-income countries, just under half of those who had high blood pressure got treatment. In rural areas of low-income countries, only one-fourth got treatment.

Three tests combined offer a good way to predict which people with Parkinson’s disease are most likely to fall, a study finds. The study included 101 people with Parkinson’s disease. Researchers gave them tests related to symptoms, balance and movement. In the next 6 months, nearly half of the people in the study fell. Half of those who fell did so more than once. Most of those who fell had three things in common. They tended to have more severe Parkinson’s symptoms. They said they often “froze” while walking. They also did not do well in balance tests. Researchers said these three tests combined would correctly predict a strong risk of falls about 80% of the time. The study was published online by the journal Neurology. HealthDay News wrote about it June 23.

Delirium affects about 1 out of 3 hospital patients over age 70. It’s even higher for those who are in intensive care or recovering from surgery. And hospitals increasingly are trying to treat or prevent it, the New York Times reported June 20. People with delirum often have hallucinations. They may become violent or act in ways that cause them to get hurt. Nobody is sure of the causes, the Times reported. Infections, surgery or insertion of a catheter may make frail patients anxious. Some medicines also may be triggers. Changes in routine and location can be a factor, the Times said. People have their sleep interrupted for tests. They may not have their eyeglasses or dentures. Delirium can slow down recovery. About 35% to 40% of older adults with hospital dementia die within a year, a study found. Those who survive may have an increased risk of dementia.