Does the weather influence dementia admissions?

Sharp, Nicola

doi:10.1002/(sici)1099-1166(199911)14:11<925::aid-gps37>3.0.co;2-b

Cited by 10 publications

(3 citation statements)

References 22 publications

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“…Table 8 summarises studies linking miscellaneous environmental exposures and dementia. One study reported no association between climate and dementia admissions [ 72 ]. Two systematic reviews examined low and extremely low frequency electric and magnetic fields and, while the evidence is mixed, there seems to be an association with dementia risk and this was corroborated by a prospective study in Switzerland which found that living close to power lines for over 15 years was associated with a doubling of Alzheimer’s disease mortality (but not the occupational study mentioned above [ 63 ]) [ 73 , 74 ].…”

Section: Resultsmentioning

confidence: 99%

Environmental risk factors for dementia: a systematic review

et al. 2016

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BackgroundDementia risk reduction is a major and growing public health priority. While certain modifiable risk factors for dementia have been identified, there remains a substantial proportion of unexplained risk. There is evidence that environmental risk factors may explain some of this risk. Thus, we present the first comprehensive systematic review of environmental risk factors for dementia.MethodsWe searched the PubMed and Web of Science databases from their inception to January 2016, bibliographies of review articles, and articles related to publically available environmental data. Articles were included if they examined the association between an environmental risk factor and dementia. Studies with another outcome (for example, cognition), a physiological measure of the exposure, case studies, animal studies, and studies of nutrition were excluded. Data were extracted from individual studies which were, in turn, appraised for methodological quality. The strength and consistency of the overall evidence for each risk factor identified was assessed.ResultsWe screened 4784 studies and included 60 in the review. Risk factors were considered in six categories: air quality, toxic heavy metals, other metals, other trace elements, occupational-related exposures, and miscellaneous environmental factors. Few studies took a life course approach. There is at least moderate evidence implicating the following risk factors: air pollution; aluminium; silicon; selenium; pesticides; vitamin D deficiency; and electric and magnetic fields.ConclusionsStudies varied widely in size and quality and therefore we must be circumspect in our conclusions. Nevertheless, this extensive review suggests that future research could focus on a short list of environmental risk factors for dementia. Furthermore, further robust, longitudinal studies with repeated measures of environmental exposures are required to confirm these associations.

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Section: Resultsmentioning

confidence: 99%

Environmental risk factors for dementia: a systematic review

et al. 2016

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“…Accordingly, worse consequences of substance assumption have been described in patients with substance use disorders with higher temperatures, 52 along with an increase of admissions for dementia, i.e., for dehydration and electrolytic imbalance. 53 It is also noteworthy that seasonality of psychiatric disorders itself could have influenced our results, which may be reflected by the peak in August of panic attacks 54 associated with the increase of manic/hypomanic episodes. 55,56 In our ED we have observed a slight decrease of total visits during summer months in the last fifteen years, with July and August exhibiting a 5 to 8% lower prevalence than March or November.…”

Section: Articlementioning

confidence: 99%

The number of emergency department visits for psychiatric emergencies is strongly associated with mean temperature and humidity variations. Results of a nine year survey

Cervellin¹,

Comelli²,

Lippi³

et al. 2014

Emerg Care J

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Several disorders, such as renal colics, stroke, atrial fibrillation and others, are epidemiologically associated with seasonality and microclimatic variations. Although evidence is still limited, an association between psychiatric emergencies and seasonality has also been previously described. In order to elucidate the possible association between weather and incidence of psychiatric emergencies in a country with temperate climate, we analyzed the influence of day by day climate changes on the number of visits for psychiatric emergencies in an urban emergency department (ED) of northern Italy. All ED visits for psychiatric emergencies were retrieved from the hospital database from 2002 to 2010. The total number of ED visits was 725,812 throughout the study period, 11,786 of which for emergency psychiatric problems. We found a strong seasonal distribution of emergency psychiatric visits, peaking in summer and at the beginning of spring. The linear regression analysis showed a strong positive association between number of daily emergency psychiatric visits and mean daily air temperature (R=0.82; P<0.001), and an inverse association with mean daily air humidity (R=-0.52; P<0.001). These findings suggest that psychiatric disorders follow a significant seasonal variation, so that it may be advisable to strengthen psychiatric emergency services during the hottest months.

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“…The controversy still remains in medical forums as to the link between meteorological parameters and the incidence of psychiatric disorders . Over the past few years, attempts have been made to investigate the still unknown mechanisms whereby weather can influence the onset and course of various medical conditions, namely organic brain syndromes, cardiopulmonary diseases as well as hospitalization due to acute neurological disorders . Initial studies had have shown that wind and related variables, such as speed and direction, can affect the mental well‐being of patients ; many studies conducted in the field of biopsychiatric research, emphasized on meteorological factors such as temperature, humidity, hours of sunlight, wind, cloudy days, and air pressure , yet few regard the effect of barometric pressure on human mental activity.…”

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confidence: 99%

The Relationship between Meteorological Conditions and Homicide, Suicide, Rage, and Psychiatric Hospitalization

Talaeı

Hedjazi

Ardanı

et al. 2014

Journal of Forensic Sciences

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This study focuses on the relationship between the incidence of homicide, rage, suicide, and psychiatric hospitalization as violent behaviors with temperature, humidity, and air pressure as specific meteorological variables in the city of Mashhad, in the northeast of Iran. The data were obtained from Iran Meteorological Organization, official registry of Legal Medicine Organization and the local psychiatric hospital, March 2009 to Feb 2010 daily and were analyzed with SPSS-14 using Pearson correlation coefficient, ANOVA, and post hoc analysis tests. The rates of rage and psychiatric admission had a significant relationship with the daily mean air temperature, minimum relative humidity, maximum relative humidity, minimum daily pressure, and maximum daily air pressure (p < 0.0001). There was no significant correlation between homicide and suicide rates with any meteorological variables (p > 0.05). We concluded that, the possibility of nonfatal violence and psychiatric hospitalization would increase in hot and arid weather with low air pressure.

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Does the weather influence dementia admissions?

Cited by 10 publications

References 22 publications

Environmental risk factors for dementia: a systematic review

Environmental risk factors for dementia: a systematic review

The number of emergency department visits for psychiatric emergencies is strongly associated with mean temperature and humidity variations. Results of a nine year survey

The Relationship between Meteorological Conditions and Homicide, Suicide, Rage, and Psychiatric Hospitalization

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