Many studies have shown that people who lack vitamin D are susceptible to heart disease and stroke. But recently, a new study by the Center for Medical Heart Surgery in Salt Lake City in the United States showed that vitamin D levels that are higher than normal also damage the heart. If it will speed up the rhythm of the heart beat, increase the incidence of atrial fibrillation.
“Sad†or “make up†is controversial as early as in 2009. Dr. Tami L Bair at Heidi Medical Center in the United States announced a study at the 2009 American College of Cardiology Science Conference that lacks and increases the level of vitamin D. The risk of vascular disease is related to death.
Bair and his colleagues interviewed more than 27,000 elderly people over the age of 50 who did not have a history of cardiovascular disease. After only a year of follow-up, they found that 77% of patients with very low vitamin D levels were more likely to die, and 45% of patients It is easier to develop coronary heart disease. Patients who lack vitamin D levels develop nearly twice as much risk of developing heart failure as people with normal levels.
The final result shows that D-deficient hypertensive patients are twice as likely to have cardiovascular disease symptoms as those with normal vitamin D levels. In patients without hypertension, there was no clear correlation between vitamin D deficiency and cardiovascular disease symptoms.
Researchers believe that maintaining normal levels of vitamin D helps prevent cardiovascular complications.
However, another voice revealed that excessive vitamin D damages the heart. In 2011, a new study presented at the annual meeting of the American Heart Association suggested that excess vitamin D may not be beneficial to the heart, but may even harm the heart.
In the past, scientists had thought that once the nutrient content was low, it would harm the heart. However, this latest study shows that if vitamin D exceeds normal levels, it may increase the chance of atrial fibrillation.
The study, conducted at the Utah Medical Center, involved 132,000 patients. The researchers found that when the levels of vitamin D in the blood of these patients are too high, the risk of atrial fibrillation increases 2.5-fold.
Experts remind that: taking vitamins must be within the scope of safety for two kinds of arguments, the Chinese Academy of Medical Sciences Fuwai Hospital of Cardiology, Zhang Yan, director of the Department of Cardiology, said: "When people get nutrients through replenishment, vitamin D levels are too high The phenomenon will occur because consumers generally believe that the nutrition products purchased from the counter are safe, and they are unaware of the risk of excessive intake of vitamin D." Zhang Jian added that the normal range of vitamin D in a person is between 41 and 80 micrograms per deciliter (ng/l), and the level of vitamin D in a person participating in the study reaches above 100 ng/l. . "For the human body, there are advantages and disadvantages of any kind of vitamins and substitutes. Our goal is to determine a safe dose range so that patients can determine how much dose is good for health and how much toxicity there is."
Lastly, Prof. Zhang Wei suggested that those patients who were recently diagnosed with atrial fibrillation and were taking vitamin D supplements must remind their doctors if they would do some tests to understand the level of nutrients in the blood of patients and help analyze the production room. Cause of trembling.
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Who is susceptible to vitamin D deficiency
"The main function of vitamin D is to regulate calcium and phosphorus metabolism in the body and maintain blood calcium and phosphorus levels so as to maintain normal growth of teeth and bones. Children lack vitamin D and prone to rickets." Chinese Academy of Medical Sciences Professor Zhang Yan, director of Cardiology Department of Cardiovascular Hospital, said in an interview with a reporter from Science and Technology Daily.
Professor Zhang Xi explained that there are two main sources of vitamin D in the human body: ultraviolet radiation in the sun, skin synthesis, and dietary provision (food and supplements). "Many types of tissues and cells have vitamin D receptors in the body. The activation of vitamin D is regulated by calcium and parathyroid hormones." Some of the systemic inflammatory markers and renin angiotensin system in the body Both have potential downstream effects.
The highest risk groups for vitamin D deficiency include: lack of sunlight or sun-covered skin, dark skin, living in high latitudes, and the elderly (because blood has fewer precursors of vitamin D, with age , the elderly have less time to go out), excessive obesity, and pregnant and lactating women.
What is the risk of atrial fibrillation? "Atrial fibrillation is one of the most common arrhythmia diseases. There is no regular pattern of seizures, and it is difficult to predict the time for seizures and cessation," said Prof. Zhang Wei. The atrial fibrillation patients' atrial will show a kind of Rapid and turbulent tremors are unable to perform normal, regular systolic and diastolic activities, and may feel palpitation, shortness of breath, chest tightness, dizziness, and poor breathing.
Professor Zhang Xi explained that the incidence of atrial fibrillation in the elderly is as high as 10%, which is second only to hypertension and coronary heart disease. If palpitation, chest tightness, and panting occur, the pulse may be fluctuating, and it may be caused by atrial fibrillation. On this basis, lying down in the evening will lead to belching, swollen feet, and often lack of strength and spirit. It may be that Heart failure caused by atrial fibrillation is a more serious condition and needs immediate treatment.
"At present, China's patients with AF may be as high as 8 million, and there is a rising trend year by year, at the same time, the incidence of atrial fibrillation will increase with age." Professor Zhang Yan revealed that the greatest harm to atrial fibrillation is in the atrium The formation of thrombosis within the brain, resulting in cerebral embolism, resulting in stroke and dementia, serious life-threatening. Zhang Qian emphasized that for elderly people, atrial fibrillation is a kind of "three-high" disease with high morbidity, high morbidity and high mortality.
“Sad†or “make up†is controversial as early as in 2009. Dr. Tami L Bair at Heidi Medical Center in the United States announced a study at the 2009 American College of Cardiology Science Conference that lacks and increases the level of vitamin D. The risk of vascular disease is related to death.
Bair and his colleagues interviewed more than 27,000 elderly people over the age of 50 who did not have a history of cardiovascular disease. After only a year of follow-up, they found that 77% of patients with very low vitamin D levels were more likely to die, and 45% of patients It is easier to develop coronary heart disease. Patients who lack vitamin D levels develop nearly twice as much risk of developing heart failure as people with normal levels.
The final result shows that D-deficient hypertensive patients are twice as likely to have cardiovascular disease symptoms as those with normal vitamin D levels. In patients without hypertension, there was no clear correlation between vitamin D deficiency and cardiovascular disease symptoms.
Researchers believe that maintaining normal levels of vitamin D helps prevent cardiovascular complications.
However, another voice revealed that excessive vitamin D damages the heart. In 2011, a new study presented at the annual meeting of the American Heart Association suggested that excess vitamin D may not be beneficial to the heart, but may even harm the heart.
In the past, scientists had thought that once the nutrient content was low, it would harm the heart. However, this latest study shows that if vitamin D exceeds normal levels, it may increase the chance of atrial fibrillation.
The study, conducted at the Utah Medical Center, involved 132,000 patients. The researchers found that when the levels of vitamin D in the blood of these patients are too high, the risk of atrial fibrillation increases 2.5-fold.
Experts remind that: taking vitamins must be within the scope of safety for two kinds of arguments, the Chinese Academy of Medical Sciences Fuwai Hospital of Cardiology, Zhang Yan, director of the Department of Cardiology, said: "When people get nutrients through replenishment, vitamin D levels are too high The phenomenon will occur because consumers generally believe that the nutrition products purchased from the counter are safe, and they are unaware of the risk of excessive intake of vitamin D." Zhang Jian added that the normal range of vitamin D in a person is between 41 and 80 micrograms per deciliter (ng/l), and the level of vitamin D in a person participating in the study reaches above 100 ng/l. . "For the human body, there are advantages and disadvantages of any kind of vitamins and substitutes. Our goal is to determine a safe dose range so that patients can determine how much dose is good for health and how much toxicity there is."
Lastly, Prof. Zhang Wei suggested that those patients who were recently diagnosed with atrial fibrillation and were taking vitamin D supplements must remind their doctors if they would do some tests to understand the level of nutrients in the blood of patients and help analyze the production room. Cause of trembling.
----Related Links----
Who is susceptible to vitamin D deficiency
"The main function of vitamin D is to regulate calcium and phosphorus metabolism in the body and maintain blood calcium and phosphorus levels so as to maintain normal growth of teeth and bones. Children lack vitamin D and prone to rickets." Chinese Academy of Medical Sciences Professor Zhang Yan, director of Cardiology Department of Cardiovascular Hospital, said in an interview with a reporter from Science and Technology Daily.
Professor Zhang Xi explained that there are two main sources of vitamin D in the human body: ultraviolet radiation in the sun, skin synthesis, and dietary provision (food and supplements). "Many types of tissues and cells have vitamin D receptors in the body. The activation of vitamin D is regulated by calcium and parathyroid hormones." Some of the systemic inflammatory markers and renin angiotensin system in the body Both have potential downstream effects.
The highest risk groups for vitamin D deficiency include: lack of sunlight or sun-covered skin, dark skin, living in high latitudes, and the elderly (because blood has fewer precursors of vitamin D, with age , the elderly have less time to go out), excessive obesity, and pregnant and lactating women.
What is the risk of atrial fibrillation? "Atrial fibrillation is one of the most common arrhythmia diseases. There is no regular pattern of seizures, and it is difficult to predict the time for seizures and cessation," said Prof. Zhang Wei. The atrial fibrillation patients' atrial will show a kind of Rapid and turbulent tremors are unable to perform normal, regular systolic and diastolic activities, and may feel palpitation, shortness of breath, chest tightness, dizziness, and poor breathing.
Professor Zhang Xi explained that the incidence of atrial fibrillation in the elderly is as high as 10%, which is second only to hypertension and coronary heart disease. If palpitation, chest tightness, and panting occur, the pulse may be fluctuating, and it may be caused by atrial fibrillation. On this basis, lying down in the evening will lead to belching, swollen feet, and often lack of strength and spirit. It may be that Heart failure caused by atrial fibrillation is a more serious condition and needs immediate treatment.
"At present, China's patients with AF may be as high as 8 million, and there is a rising trend year by year, at the same time, the incidence of atrial fibrillation will increase with age." Professor Zhang Yan revealed that the greatest harm to atrial fibrillation is in the atrium The formation of thrombosis within the brain, resulting in cerebral embolism, resulting in stroke and dementia, serious life-threatening. Zhang Qian emphasized that for elderly people, atrial fibrillation is a kind of "three-high" disease with high morbidity, high morbidity and high mortality.
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