Is it true that noise damages the brain? Danish study: Avoid the top ten "dementia risk factors" that increase the risk of Alzheimer's disease
Does noise make people fatter and more susceptible to heart disease? Large Danish study: Increased risk of dementia
Environmental factors often have huge potential impacts on human health. For example, air pollution has been recognized to be associated with chronic diseases and even cancer. After air pollution, Europe ranks traffic noise as the second largest risk factor affecting health. In the past, epidemiology often linked traffic noise to coronary heart disease, obesity, and diabetes. The possible physiological mechanism is that noise can cause a series of stress reactions, affect the autonomic nervous system and endocrine system, and release stress hormones. Noise at night is even thought to promote endothelial cell dysfunction and oxidative stress, leading to changes in the immune system and increased inflammation in the body.
In order to study whether noise is related to the risk of Alzheimer’s disease in middle-aged and elderly people, a Danish observational study of 2 million adults over the age of 60 across the country pointed out that long-term exposure to road traffic, railway and other noise will increase all types of cognitive dysfunction diseases. and the chance of Parkinson’s disease. Especially related to the risk of Alzheimer’s disease.
However, research has also found contradictory phenomena that are opposite to the expected results. For example, the risk of dementia among elderly people who live near high-noise environments is smoother or even decreased. This may indicate that pre-installation of sound insulation measures in buildings plays a role. . In addition, the study also found that people living in cities have a lower risk of dementia, while older people living in suburbs have a higher risk of dementia.
Although the study was large-scale, it only had correlational data and could not determine cause and effect. It also did not consider the impact of airport noise, industrial area noise and workplace noise on individuals. However, environmental factors do affect public health and are important risk factors for preventing Alzheimer’s disease. It is estimated that by 2050, the number of dementia patients worldwide will exceed 130 million, which will have a huge impact on the global public health and social care systems.
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Dementia, including Alzheimer’s disease, or cognitive dysfunction, may cause symptoms such as memory loss, personality changes, decreased thinking ability, decreased ability to perform daily activities, and poor executive function. Alzheimer’s disease is related to proteins and beta-amyloid in brain cells, and may also be caused by thyroid degeneration, infection, insufficient vitamin B12 intake, drug side effects, and excessive drinking. Dementia is often difficult to reverse once it occurs, and current drug treatments can only control symptoms and slow the progression of cognitive impairment.
How can you prevent the risk of Alzheimer’s disease in the future? A comprehensive study published in the “Journal of Neurology, Neurosurgery & Psychiatry” concluded that there are ten risk factors that may increase the risk of Alzheimer’s disease, including education, cognitive activity, middle-aged obesity, depression, and diabetes , hypertension, hyperhomocysteinemia, head trauma, stress, postural hypotension, etc. The more risk factors there are, the higher the likelihood of developing Alzheimer’s disease.
This study analyzed 243 observational studies and 152 randomized controlled trials to draw more powerful lifestyle recommendations for preventing Alzheimer’s disease, including receiving as much education as possible when young, participating in cognitive activities such as reading, and avoiding Diabetes and high blood pressure, reducing stress, staying away from depression, etc.
In addition, regular exercise, good sleep quality, maintaining a healthy weight in old age, having good cardiovascular health, reducing smoking, and increasing vitamin C intake will also help to a certain extent. In addition, high cholesterol and a high-fat diet may accelerate the formation of beta-amyloid plaques in the brain, leading to an increased risk of dementia. Reducing your daily intake of saturated fat can also reduce damage to brain health.
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