| 1. |
- Åberg, Maria A I, 1972, et al.
(författare)
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Risk factors in Swedish young men for amyotrophic lateral sclerosis in adulthood
- 2018
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Ingår i: Journal of Neurology. - : Springer Science and Business Media LLC. - 0340-5354 .- 1432-1459. ; 265:3
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Tidskriftsartikel (refereegranskat)abstract
- Recent research suggests that the incidence of amyotrophic lateral sclerosis (ALS) may be on the rise. Since ALS becomes predominant in later life, most studies on causal factors are conducted in middle-aged or older populations where potentially important influences from early life can usually not be adequately captured. We aimed to investigate predictors in young Swedish men for ALS in adulthood. Therefore, we performed a prospective cohort study of young men (aged 16-25, n = 1,819,817) who enlisted 1968-2005 and took part in comprehensive conscription examinations. Incident cases of ALS (n = 526) during up to 46 years of follow-up were identified in the National Hospital Register and Swedish Cause of Death Register. Those who developed ALS had lower BMI (body mass index) at conscription than their peers (p = 0.03). The risk of ALS during follow-up was calculated with Cox proportional hazards models. No associations were found with physical fitness, erythrocyte sedimentation rate, or non-psychotic mental disorders. Low overall muscle strength compared to high overall muscle strength [hazard ratio (HR) 1.36; 95% confidence interval (CI) 1.01-1.83] and low BMI (a one-unit increase HR 0.96; 95% CI 0.93-0.99) and lower erythrocyte volume fraction (a one-unit increase HR 0.96; 95% CI 0.92-0.998) were the statistically significant predictors for ALS in adjusted models. These findings provide novel epidemiologic evidence of a prospective association between low overall muscle strength and erythrocyte volume fraction in young men and ALS risk.
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| 2. |
- Glise Sandblad, Katarina, 1982, et al.
(författare)
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Obesity in adolescent men increases the risk of venous thromboembolism in adult life
- 2020
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Ingår i: Journal of Internal Medicine. - : Wiley. - 0954-6820 .- 1365-2796. ; 287:6, s. 734-745
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Tidskriftsartikel (refereegranskat)abstract
- Background: As the population of obese and severely obese young adults grows, it is becoming increasingly important to recognize the long-term risks associated with adolescent obesity. Objectives: This study aimed to determine the association between body mass index (BMI) in young men at enlistment for military service and later risk of venous thromboembolism (VTE). Methods: Nationwide register-based prospective cohort study of men enlisting 1969 to 2005, followed through the Swedish National Patient and Cause of Death registries. We identified 1 639 838 men (mean age, 18.3 years) free of prior venous thromboembolism, of whom 29 342 were obese (BMI 30 to <35 kg m−2) and 7236 severely obese (BMI ≥ 35 kg m−2). The participants were followed until a first registered diagnosis of VTE. Results: During a median follow-up of 28 years (interquartile interval, 20 to 36 years), 11 395 cases of deep vein thrombosis and 7270 cases of pulmonary embolism were recorded. Compared with men with a BMI of 18.5 to <20 kg m−2, men with higher BMI in young adulthood showed an incrementally increasing risk of VTE that was moderately but significantly increased already at normal BMI levels. Adolescent obese men with a BMI of 30 to 35 kg m−2 had an adjusted hazard ratio of 2.93 (95% confidence interval, 2.65 to 3.24) for VTE. Severely obese men with a BMI of ≥35 kg m−2 had a hazard ratio of 4.95 (95% confidence interval, 4.16 to 5.90). Conclusions: Men who were obese or severely obese in young adulthood had a marked increase in risk of VTE.
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| 3. |
- Lindgren, Martin, et al.
(författare)
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Cognitive performance in late adolescence and long-term risk of early heart failure in Swedish men.
- 2018
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Ingår i: European journal of heart failure. - : Wiley. - 1879-0844 .- 1388-9842. ; 20:6, s. 989-97
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Tidskriftsartikel (refereegranskat)abstract
- Heart failure (HF) incidence appears to increase among younger individuals, raising questions of how risk factors affect the younger population. We investigated the association of cognitive performance in late adolescence with long-term risk of early HF.We followed a cohort of Swedish men enrolled in mandatory military conscription in 1968-2005 (n = 1 225 300; mean age 18.3 years) until 2014 for HF hospitalization, using data from the Swedish National Inpatient Registry. Cognitive performance (IQ) was measured through a combination of tests, separately evaluating logical, verbal, visuospatial, and technical abilities. The results were standardized, weighted, and presented as stanines of IQ. The association between IQ and risk of HF was estimated using Cox proportional hazards models. In follow-up, there were 7633 cases of a first HF hospitalization (mean age at diagnosis 50.1 years). We found an inverse relationship between global IQ and risk of HF hospitalization. Using the highest IQ stanine as reference, the adjusted hazard ratio for the lowest IQ with risk of HF was 3.11 (95% confidence interval 2.60-3.71), corresponding to a hazard ratio of 1.32 (95% CI 1.28-1.35) per standard deviation decrease of IQ. This association proved persistent across predefined categories of HF with respect to pre-existing or concomitant co-morbidities; it was less apparent among obese conscripts (P for interaction =0.0004).In this study of young men, IQ was strongly associated with increased risk of early HF. The medical profession needs to be aware of this finding so as to not defer diagnosis.
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| 4. |
- Lindgren, Martin, et al.
(författare)
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Elevated resting heart rate in adolescent men and risk of heart failure and cardiomyopathy.
- 2020
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Ingår i: ESC heart failure. - : Wiley. - 2055-5822. ; 7:3, s. 1178-1185
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Tidskriftsartikel (refereegranskat)abstract
- This study aims to investigate the association of resting heart rate (RHR) measured in late adolescence with long-term risk of cause-specific heart failure (HF) and subtypes of cardiomyopathy (CM), with special attention to cardiorespiratory fitness.We performed a nation-wide, register-based cohort study of all Swedish men enrolled for conscription in 1968-2005 (n = 1 008 363; mean age = 18.3 years). RHR and arterial blood pressure were measured together with anthropometrics as part of the enlistment protocol. HF and its concomitant diagnoses, as well as all CM diagnoses, were collected from the national inpatient, outpatient, and cause of death registries. Risk estimates were calculated by Cox-proportional hazards models while adjusting for potential confounders. During follow-up, there were 8400 cases of first hospitalization for HF and 3377 for CM. Comparing the first and fifth quintiles of the RHR distribution, the hazard ratio (HR) for HF associated with coronary heart disease, diabetes, or hypertension was 1.25 [95% confidence interval (CI) = 1.13-1.38] after adjustment for body mass index, blood pressure, and cardiorespiratory fitness. The corresponding HR was 1.43 (CI = 1.08-1.90) for HF associated with CM and 1.34 (CI = 1.16-1.54) for HF without concomitant diagnosis. There was an association between RHR and dilated CM [HR = 1.47 (CI = 1.27-1.71)] but not hypertrophic, alcohol/drug-induced, or other cardiomyopathies.Adolescent RHR is associated with future risk of HF, regardless of associated aetiological condition. The association was strongest for HF associated with CM, driven by the association with dilated CM. These findings indicate a causal pathway between elevated RHR and myocardial dysfunction that warrants further investigation.
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| 5. |
- Lindgren, Martin, et al.
(författare)
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Resting heart rate in late adolescence and long term risk of cardiovascular disease in Swedish men
- 2018
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Ingår i: International Journal of Cardiology. - : Elsevier BV. - 0167-5273. ; 259, s. 109-115
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Tidskriftsartikel (refereegranskat)abstract
- Aim: To investigate the association of resting heart rate (RHR) measured in late adolescence with the long term risk of myocardial infarction (MI), ischemic stroke (IS), heart failure (HF), atrial fibrillation (AF), cardiovascular- and all-cause death. Methods and results: We followed a cohort of Swedish men enrolled for conscription in 1968–2005 (n = 1,008,485; mean age = 18.3 years) until December 2014. Outcomes were collected from the national inpatient - (IPR), outpatient - (OPR) and cause of death registries. Cox proportional hazard models were used to analyze the longitudinal association between RHR and outcomes while adjusting for potential confounders. While we found no independent association between RHR and risk of IS or MI when comparing the highest with the lowest quintile of the RHR distribution, but a positive association persisted between RHR and incident HF (Hazard ratio (HR) = 1.39 [95% confidence interval (CI) = 1.29–1.49]) after adjustment for body mass index (BMI) and blood pressure (BP). In similarly adjusted models, an inverse association was found for AF while there were weaker associations with death from cardiovascular disease (CVD) and all causes (adjusted HR = 1.12 [CI = 1.04–1.21] and 1.20 [CI = 1.17–1.24]). After further adjustment for cardiorespiratory fitness (CRF), the associations persisted for HF (HR = 1.26 [1.17–1.35] for any diagnostic position and HR = 1.43 [1.28–1.60] for HF as a main diagnosis) and for all-cause death (HR 1.09 [1.05–1.12]) but not for CVD death. Conclusion: Adolescent RHR is associated with future risk of HF and death, independently of BP, BMI and CRF, but not with CVD death, MI or IS, suggesting a causal pathway between elevated heart rate and myocardial dysfunction. © 2018 The Authors
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| 6. |
- Robertson, Josefina, et al.
(författare)
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Higher Body Mass Index in Adolescence Predicts Cardiomyopathy Risk in Midlife Long-Term Follow-Up Among Swedish Men
- 2019
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Ingår i: Circulation. - : Ovid Technologies (Wolters Kluwer Health). - 0009-7322 .- 1524-4539. ; 140:2, s. 117-125
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Tidskriftsartikel (refereegranskat)abstract
- Background: Modifiable lifestyle factors in relation to risk for cardiomyopathy, a common and increasing cause of heart failure in the young, have not been widely studied. We sought to investigate a potential link between obesity, a recognized predictor of early heart failure, in adolescence and being diagnosed with cardiomyopathy in adulthood. Methods: This was a nationwide register-based prospective cohort study of 1 668 893 adolescent men (mean age, 18.3 years; SD, 0.7 years) who enlisted for compulsory military service from 1969 to 2005. At baseline, body mass index (BMI), blood pressure, and medical disorders were registered, along with test results for fitness and muscle strength. Cardiomyopathy diagnoses were identified from the National Hospital Register and Cause of Death Register during an up to 46-year follow-up and divided into categories: dilated, hypertrophic, alcohol/drug-induced, and other. Hazard ratios were calculated with Cox proportional hazards models. Results: During follow-up (median, 27 years; Q1-Q3, 19-35 years), 4477 cases of cardiomyopathy were identified, of which 2631 (59%) were dilated, 673 (15%) were hypertrophic, and 480 (11%) were alcohol/drug-induced. Increasing BMI was strongly associated with elevated risk of cardiomyopathy, especially dilated, starting at levels considered normal (BMI, 22.5-<25 kg/m(2); hazard ratio, 1.38 [95% CI, 1.22-1.57]), adjusted for age, year, center, and baseline comorbidities, and with a >8-fold increased risk at BMI >= 35 kg/m(2) compared with BMI of 18.5 to <20 kg/m(2). For each 1-unit increase in BMI, similarly adjusted hazard ratios were 1.15 (95% CI, 1.14-1.17) for dilated cardiomyopathy, 1.09 (95% CI, 1.06-1.12) for hypertrophic cardiomyopathy, and 1.10 (1.06-1.13) for alcohol/drug-induced cardiomyopathy. Conclusions: Even mildly elevated body weight in late adolescence may contribute to being diagnosed with cardiomyopathy in adulthood. The already marked importance of weight control in youth is further strengthened by these findings, as well as greater evidence for obesity as a potential important cause of adverse cardiac remodeling that is independent of clinically evident ischemic heart disease.
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| 7. |
- Robertson, Josefina, et al.
(författare)
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Mental disorders and stress resilience in adolescence and long-term risk of early heart failure among Swedish men.
- 2017
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Ingår i: International journal of cardiology. - : Elsevier BV. - 1874-1754 .- 0167-5273. ; 243, s. 326-331
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Tidskriftsartikel (refereegranskat)abstract
- Recent research suggests that the prevalence of early heart failure may be on the rise. Compromised mental health in adolescence may help to explain this phenomenon. We aimed to investigate whether nonpsychotic mental disorder and low stress resilience in late adolescence were associated with increased risk of early heart failure.A prospective cohort study of 18-year-old men (n=1,784,450) who enlisted 1968-2005. At the conscription examination, 74,522 individuals were diagnosed with nonpsychotic mental disorders. Stress resilience was rated by psychologists; values were trichotomized. The risk of heart failure during the 46-year follow-up was calculated with Cox proportional hazards models. Baseline comorbidities, BMI, blood pressure, fitness, IQ, and parental education were included in the models.Incident cases of heart failure (n=9962) were identified in the National Hospital Register. In fully adjusted models, increased risk of early heart failure was observed in males diagnosed with nonpsychotic mental disorders at conscription (hazard ratio (HR), 1.36; 95% confidence interval (CI), 1.25-1.47). The highest risk was seen among men with the risk factor alcohol/substance use (HR 1.90; 95% CI 1.59-2.28). Conscripts with the risk factor low stress resilience showed increased risk of heart failure compared to those with high scores (HR 1.41; 95% CI 1.30-1.53).Nonpsychotic mental disorder, as well as low stress resilience in late adolescence may be associated with increased risk of early heart failure. Adolescence is potentially an important time for mental health interventions that may reduce both short and long-term consequences.
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| 8. |
- Rosengren, Annika, 1951, et al.
(författare)
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Body weight in adolescence and long-term risk of early heart failure in adulthood among men in Sweden
- 2017
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Ingår i: European heart journal. - : Oxford University Press (OUP). - 0195-668X .- 1522-9645. ; 38:24, s. 1926-1933
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Tidskriftsartikel (refereegranskat)abstract
- AIMS: To study the relation between body mass index (BMI) in young men and risk of early hospitalization with heart failure. METHODS AND RESULTS: In a prospective cohort study, men from the Swedish Conscript Registry investigated 1968-2005 (n = 1 610 437; mean age, 18.6 years were followed 5-42 years (median, 23.0 years; interquartile range, 15.0-32.0), 5492 first hospitalizations for heart failure occurred (mean age at diagnosis, 46.6 (SD 8.0) years). Compared with men with a body mass index (BMI) of 18.5-20.0 kg/m2, men with a BMI 20.0-22.5 kg/m2 had an hazard ratio (HR) of 1.22 (95% CI, 1.10-1.35), after adjustment for age, year of conscription, comorbidities at baseline, parental education, blood pressure, IQ, muscle strength, and fitness. The risk rose incrementally with increasing BMI such that men with a BMI of 30-35 kg/m2 had an adjusted HR of 6.47 (95% CI, 5.39-7.77) and those with a BMI of >/=35 kg/m2 had an HR of 9.21 (95% CI, 6.57-12.92). The multiple-adjusted risk of heart failure per 1 unit increase in BMI ranged from 1.06 (95% CI, 1.02-1.11) in heart failure associated with valvular disease to 1.20 (95% CI, 1.18-1.22) for cases associated with coronary heart disease, diabetes, or hypertension. CONCLUSION: We found a steeply rising risk of early heart failure detectable already at a normal body weight, increasing nearly 10-fold in the highest weight category. Given the current obesity epidemic, heart failure in the young may increase substantially in the future and physicians need to be aware of this.
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