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Statins lower risk of Parkinsonism among Elderly
MINNEAPOLIS - Statins are one of most prescribed drugs used to lower cholesterol in the blood and protect against atherosclerosis that can lead to hardening of the arteries, heart attack and stroke.
Elderly people using statins may have a lower risk of developing parkinsonism compared to people who were not taking statins, finds a new study. This may be partly caused by the protective effect statins may have on arteries in the brain.
The research is published in the March 23, 2022, online issue of Neurology®.
Parkinsonism is a term for a group of neurological conditions that cause movement problems including tremors, slowed movement and stiffness, with Parkinson's disease being one of the better knowns causes.
"Our results suggest people using statins may have a lower risk of parkinsonism and that may be partly caused by the protective effect statins may have on arteries in the brain," said study author Shahram Oveisgharan, MD, of Rush University Medical Center in Chicago. "Our results are exciting, because movement problems in older adults that come under the umbrella of parkinsonism are common, often debilitating and generally untreatable."
The study looked 2,841 people with an average age of 76 who did not have parkinsonism at the start of the study. Of those, 936 people, or 33%, were taking statins.
Researchers followed up with participants annually for an average of six years to check the statins they were taking and to test for signs of parkinsonism.
People were considered to have parkinsonism if they met the requirement for mild impairment for two or more of the following symptoms: tremor, stiffness, parkinsonian gait, which is marked by small shuffling steps and a general slowness of movement, and bradykinesia, a hallmark of parkinsonism which is difficulty moving the body quickly on command.
By the end of the study, 1,432 people, or 50%, developed signs of parkinsonism. Out of 936 people taking statins, 418 people, or 45%, developed parkinsonism six years later, compared to 1,014 out of 1,905 people, or 53%, of those who had not been taking statins.
After controlling for age, sex and vascular risks like smoking and diabetes that could affect risk of parkinsonism, researchers found that people who had been taking statins, on average, had 16% lower risk of developing parkinsonism six years later compared to those who had not been taking statins. About 79% of people on statin therapy were taking moderate or high intensity statins. Researchers found that people taking higher intensity statins had a 7% lower risk of developing parkinsonism compared to those on low intensity statins.
Researchers also examined the brains of 1,044 people who died during the study. They found those who had been using statins had, on average, 37% lower odds of having atherosclerosis compared to those who had not been using statins.
"More research is needed, but statins could be a therapeutic option in the future to help reduce the effects of parkinsonism in the general population of older adults, not just people with high cholesterol or who are at risk for stroke," Oveisgharan said. "At a minimum, our study suggests brain scans or vascular testing may be beneficial for older adults who show signs of parkinsonism but don't have classic signs of Parkinson's disease or do not respond to Parkinson's disease medications."
Dr Kartikeya Kohli is an Internal Medicine Consultant at Sitaram Bhartia Hospital in Delhi with super speciality training in Nephrology. He has worked with various eminent hospitals like Indraprastha Apollo Hospital, Sir Gangaram Hospital. He holds an MBBS from Kasturba Medical College Manipal, DNB Internal Medicine, Post Graduate Diploma in Clinical Research and Business Development, Fellow DNB Nephrology, MRCP and ECFMG Certification. He has been closely associated with India Medical Association South Delhi Branch and Delhi Medical Association and has been organising continuing medical education programs on their behalf from time to time. Further he has been contributing medical articles for their newsletters as well. He is also associated with electronic media and TV for conduction and presentation of health programs. He has been associated with Medical Dialogues for last 3 years and contributing articles on regular basis.
Dr Kamal Kant Kohli-MBBS, DTCD- a chest specialist with more than 30 years of practice and a flair for writing clinical articles, Dr Kamal Kant Kohli joined Medical Dialogues as a Chief Editor of Medical News. Besides writing articles, as an editor, he proofreads and verifies all the medical content published on Medical Dialogues including those coming from journals, studies,medical conferences,guidelines etc. Email: drkohli@medicaldialogues.in. Contact no. 011-43720751