scholarly journals Dietary protein and protein-containing food groups in relation to menarche: A longitudinal study

Author(s):  
Nazanin Moslehi ◽  
Golaleh Asghari ◽  
Parvin Mirmiran ◽  
Fereidoun Azizi

Abstract Background Inconsistent findings have been reported for associations between protein intakes and age at menarche. We aimed to investigate the longitudinal associations between intakes of protein and protein-containing food groups with the occurrence of menarche and early menarche in a cohort of Iranian girls.Methods Girls aged 6–14 years in the third or fourth examination cycles of the Tehran Lipid and Glucose Study were selected and were followed to the fifth examination cycle. Daily intakes of protein from different animal/plant sources and ten protein-containing food groups were assessed using a food frequency questionnaire collected at baseline. Attaining menarche and age at menarche were asked during each examination cycle. Cox proportional hazards regression was used to estimating hazard ratios (HRs) and 95% confidence interval (95%CI) for the occurrence of menarche per one standard deviation (SD) of dietary intakes. Logistic regression was also used to estimate the odds of reaching menarche ≤ 12 years.Results During the study, 147(61%) of girls reached menarche, the median age at menarche was 12 years. The HRs (95% CI) for the occurrence of menarche per one-SD of dietary intakes were 0.68(0.48, 0.98) for plant protein and 1.36(1.01, 1.84) for animal protein after adjusting for confounders. Substituting 10-g animal protein with plant protein was associated with a 16% (95%CI: 5–25%) lower risk of menarche. Dietary intakes of poultry (HR: 1.35; 95%CIs: 1.00-1.82) and low-fat dairy (HR: 1.20; 95%CIs: 0.99–1.46) were marginally associated with the increased risk of occurrence of menarche. However, the odds of early menarche was significant only for plant protein (odds ratio = 0.39; 95% CI: 0.16–0.96).Conclusions Our findings indicate that animal and plant protein intake was positively and negatively associated with the risk of menarche, respectively. Some protein-containing foods such as poultry and low-fat dairy were also related to menarche occurrence, but neither animal protein nor protein-containing food groups were associated with menarche occurrence ≤ 12 years.

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Nazanin Moslehi ◽  
Golaleh Asghari ◽  
Parvin Mirmiran ◽  
Fereidoun Azizi

Abstract Background Inconsistent findings have been reported for associations between protein intake and age at menarche. We aimed to investigate the association between intake of protein and protein-containing food groups during childhood with menarche among Iranian girls. Methods Girls aged 6–18 years who did not experience menarche in the third or fourth examination cycles of the Tehran Lipid and Glucose Study were selected and were followed to the fifth examination cycle. Daily intakes of protein from different animal/plant sources and ten protein-containing food groups were assessed using a food frequency questionnaire at baseline (the third or fourth examination cycles). Occurrence of menarche and its onset age were asked during each examination cycle. Cox proportional hazards regression was used to estimating hazard ratios (HRs) and 95% confidence interval (95%CI) for the occurrence of menarche per one standard deviation (SD) of dietary intakes. Logistic regression was also used to estimate the odds of reaching menarche ≤12 years. Results During the study, 147(61%) of girls reached menarche, the median age at menarche was 12 years. The adjusted HRs (95% CI) for the occurrence of menarche per one-SD of dietary intakes were 0.68 (0.48, 0.98; p = 0.040) for plant protein and 1.36 (1.01, 1.84; p = 0.042) for animal protein after adjusting for baseline age, BMI Z-score, energy intake, and mother’s early menarche and education. Substituting 10-g animal protein with plant protein was associated with a 16% (95%CI: 5–25%; p = 0.006) lower risk of menarche. Dietary intakes of poultry (adjusted HR: 1.35; 95% CIs: 1.00–1.82; p = 0.049) and low-fat dairy (adjusted HR: 1.20; 95%CIs: 0.99–1.46; p = 0.064) were marginally associated with the increased risk of menarche. However, the odds of early menarche was significant only for plant protein (adjusted odds ratio = 0.39; 95% CI: 0.16–0.96; p = 0.040). Conclusions Our findings indicate that the risk of menarche increases by higher intakes of animal protein and decreases by plant protein. Intakes of poultry and low-fat dairy associate with a higher risk of menarche. The odds of menarche occurrence ≤12 years reduces by higher intakes of plant protein.


2021 ◽  
Author(s):  
Li Cai ◽  
Lan Qiu ◽  
Yaqi Wang ◽  
Li Wu ◽  
Xiaojie Wu ◽  
...  

Abstract Background: Findings on the association between early menarche and asthma onset remain inconsistent and the evidence in the US is lacking. Furthermore, there was no clear separation of childhood- and adult-onset asthma in previous studies. Therefore, we aim at quantitatively estimating the association of age at menarche with risk of childhood- and adult-onset asthma separately in US girls and women.Methods: We conducted a retrospective cohort study of 24,282 US girls and women aged less than 80 years by using continuous NHANES data in 2001-2018. Weighted Cox proportional-hazards regression models with censoring ages of 19 and 79 were used to separately estimate hazard ratios of childhood- and adult-onset asthma associated with age at menarche. Results: Each one-year increase of age at menarche was significantly associated with a 17% (HR [95%CI]: 0.83 [0.77, 0.90]) decrease in the risk of childhood-onset asthma. Compared with age at menarche of 12-14, we observed a 60% (HR [95%CI]: 1.60 [1.22, 2.09]) increased risk of childhood-onset asthma for early menarche (age at menarche <12 years) and 41% (HR [95%CI]: 0.59 [0.32, 1.08]) decreased risk for late menarche (age at menarche ≥15 years). Race, family income, education and family history of asthma did not modify these associations. No significant association between age at menarche and adult-onset asthma.Conclusions: In this US nationally representative study, we found that early menarche was associated with increased risk of childhood-onset asthma, but not adult-onset asthma. These findings help demonstrate early menarche may be a risk factor for childhood-onset asthma in US, indicating timely and effective management of special individuals with early menarche for preventing asthma.


2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Zhi-bing Hu ◽  
Ze-xiong Lu ◽  
Feng Zhu

Abstract Background The relationship between women’s reproductive characteristics and stroke events is unclear. We aimed to investigate age at menarche, age at menopause and number of reproductive years in relation to fatal stroke occurrence in the Guangzhou Biobank Cohort Study. Methods In total, 16,504 postmenopausal women without stroke, heart disease or a cancer history at baseline were included and followed up for a median of 12.0 years. After review of available records, 222 stroke deaths were recorded. Cox proportional hazards regression was used to assess the associations between the risk of fatal stroke occurrence and age at menarche, age at menopause and number of reproductive years. Results In the whole cohort, compared with those aged 15 years at menarche, an increased risk of fatal stroke among women at menarche showed respectively in those aged 12 years (aHR (adjusted hazard ratio) = 1.86, 95% confidence interval (CI) 0.96–3.60), aged 13 years (aHR = 1.69, 95% CI 0.98–2.92), aged 17 years (aHR = 1.83, 95% CI 1.10–3.05) and aged ≥ 18 years (aHR = 1.66, 95% CI 1.03–2.70), wherein the associations revealed an atypically U-shaped; similar U-shaped association to the cohort of postmenopausal women born before 1940 released a range of incremental risks of fatal stroke in women at menarche aged ≤ 12 years (aHR = 3.68, 95% CI 1.68–8.05), aged 13 years (aHR = 2.11, 95% CI 1.02–4.34), aged 14 years (aHR = 2.07, 95% CI 1.04), aged 17 years (aHR = 2.30, 95% CI 1.20–4.39) and aged 18 years (aHR = 2.50, 95% CI 1.37–4.57), respectively. Compared with menopausal women aged 51–52 years, those aged < 43 years at menopause had an increased risk for fatal stroke among postmenopausal women born in and after 1940 (aHR = 1.64, 95% CI 0.97–2.78) and postmenopausal women born before 1940 (aHR = 1.97, 95% CI 1.05–3.69). Additionally, compared with those with 32–34 reproductive years, women with ≤ 28 reproductive years had an increased risk for fatal stroke in the whole cohort (aHR = 1.91, 95% CI 1.28–2.86) and the cohort of postmenopausal women born before 1940 (aHR = 1.79, 95% CI 1.15–2.80). Conclusions Younger and older age at menarche, younger age at menopause and fewer reproductive ages were related to an increased risk of fatal stroke in postmenopausal women.


2017 ◽  
Vol 35 (5_suppl) ◽  
pp. 168-168
Author(s):  
David Tat ◽  
Erin Van Blarigan ◽  
Stacey A. Kenfield ◽  
Jenny Broering ◽  
Janet E. Cowan ◽  
...  

168 Background: Recent research suggests a positive relationship between intake of high-fat dairy, particularly whole milk, and prostate cancer (PC) mortality. However, data are limited in men after PC diagnosis. Methods: We conducted a prospective cohort study among 1336 men with non-metastatic PC in CaPSURE. The men answered a food frequency questionnaire (FFQ) in 2004-2005 (median time from diagnosis to the FFQ: 2 y) and were followed for PC progression until April 2016. PC progression was defined as: prostate cancer death, bone metastasis from PC, biochemical recurrence, or secondary treatment. Multivariate Cox Proportional Hazards regression was used to calculate hazards ratios (HR) and 95% confidence intervals (CI) for associations between total, whole fat, and low-fat milk; total, high-fat, and low-fat dairy; and specific dairy items and PC progression. We adjusted for time from diagnosis to FFQ, calories, age at diagnosis, CAPRA score, smoking, BMI, walking pace, and primary PC treatment. Results: 314 events were observed (mean follow-up: 7.2 y). Whole milk was associated with an increased risk of PC progression when adjusting for age, calories, and time since diagnosis (HR ≥1 vs. <1 serving/wk: 1.37; 95% CI: 1.03, 1.84; p-value: 0.03). This association was slightly attenuated, and not statistically significant, when adjusting for clinical and other lifestyle factors (HR: 1.27; 95% CI: 0.91, 1.77; p-value: 0.15). High-fat dairy intake also appeared associated with an increased risk of PC progression, but the association was not statistically significant (adjusted HR ≥4 vs. <1 servings/day: 1.40; 95% CI: 0.92, 2.13; p-trend: 0.18). Post-diagnostic intakes of low-fat milk and other dairy foods were not associated with PC progression. Conclusions: Post-diagnostic intake of milk and other dairy foods was not associated with PC progression. Research in populations with greater intake of whole milk is warranted to further investigate whether post-diagnostic whole milk intake increases risk of PC progression. Funding: This work was funded by the DOD Prostate Cancer Research Program (W81XWH-13-2-0074) and the NIH (K07CA197077).


Nutrients ◽  
2019 ◽  
Vol 11 (2) ◽  
pp. 284 ◽  
Author(s):  
Ingegerd Johansson ◽  
Anders Esberg ◽  
Lena M Nilsson ◽  
Jan-Håkan Jansson ◽  
Patrik Wennberg ◽  
...  

Dairy products are important constituents of most diets, and their association with adverse health outcomes remains a focus. We characterized dairy food intake and examined associations with the incidence of type 2 diabetes (T2D), myocardial infarction (MI) or stroke among 108,065 Swedish men and women. Hazard ratios (HRs) and 95% CIs were estimated using the multivariable Cox proportional hazards models in a population characterized by high milk tolerance. During a mean follow-up of 14.2 years, 11,641 first-time events occurred. Non-fermented milk intake decreased, whereas butter intake increased over the period. For high intake of non-fermented milk, the HR (95% CI) for developing T2D and MI was 1.17 (1.03, 1.34) and 1.23 (1.10, 1.37), respectively, in men. A greater intake of butter, fermented milk, and cheese tended to be associated with a reduced risk of T2D and/or MI. Non-consumers and those who chose low-fat variants of the targeted dairy products had increased risk for T2D, MI, or stroke compared to those in the non-case group. Generally, effect-sizes were small. This prospective study found that non-fermented milk was associated with an increased risk for developing T2D and MI and that subjects abstaining from dairy products or choosing low-fat variants were at greater risk. However, the overall cardiometabolic risk of non-fermented milk intake was judged as low, since the effect sizes were small.


2021 ◽  
Author(s):  
Zhi-bing Hu ◽  
Ze-xiong Lu ◽  
Feng Zhu

Abstract Background The relationship between women’s reproductive characteristics and stroke events is unclear. We aimed to investigate age at menarche, age at menopause and number of reproductive years in relation to fatal stroke occurrence in the Guangzhou Biobank Cohort Study. Methods In total, 16504 postmenopausal women without stroke, heart disease or a cancer history at baseline were included and followed up for a median of 12.0 years. After review of available records, 222 stroke deaths were recorded. Cox proportional hazards regression was used to assess the associations between the risk of fatal stroke occurrence and age at menarche, age at menopause and number of reproductive years. Results In the whole cohort, compared with those aged 15 years at menarche, women aged 17 years at menarche had an increased risk for fatal stroke (adjusted hazard ratio [aHR] = 1.83, 95% confidence interval (CI) 1.10–3.05) and fatal haemorrhagic stroke (HR = 2.65, 95% CI 1.14–6.18), and women aged ≥ 18 years at menarche had an increased risk for fatal stroke (HR = 1.66, 95% CI 1.03–2.70) and fatal ischaemic stroke (HR = 2.01, 95% CI 1.01–3.99). Among postmenopausal women born before 1940, women aged < 43 years at menopause had an increased risk for fatal stroke (HR = 1.97, 95% CI 1.05–3.69) compared with those aged 51–52 years at menopause. Additionally, in the whole cohort, women with ≤ 28 reproductive years had an increased risk for fatal stroke (HR = 1.91, 95% CI 1.28–2.86) and fatal ischaemic stroke (HR = 2.26, 95% CI 1.26–4.05) compared with those with 32–34 reproductive years; postmenopausal women born before 1940 had a similar risk for fatal stroke and fatal ischaemic stroke. Conclusions Older age at menarche, younger age at menopause and fewer reproductive ages were related to an increased risk of fatal stroke in postmenopausal women.


2021 ◽  
pp. 000486742110096
Author(s):  
Oleguer Plana-Ripoll ◽  
Patsy Di Prinzio ◽  
John J McGrath ◽  
Preben B Mortensen ◽  
Vera A Morgan

Introduction: An association between schizophrenia and urbanicity has long been observed, with studies in many countries, including several from Denmark, reporting that individuals born/raised in densely populated urban settings have an increased risk of developing schizophrenia compared to those born/raised in rural settings. However, these findings have not been replicated in all studies. In particular, a Western Australian study showed a gradient in the opposite direction which disappeared after adjustment for covariates. Given the different findings for Denmark and Western Australia, our aim was to investigate the relationship between schizophrenia and urbanicity in these two regions to determine which factors may be influencing the relationship. Methods: We used population-based cohorts of children born alive between 1980 and 2001 in Western Australia ( N = 428,784) and Denmark ( N = 1,357,874). Children were categorised according to the level of urbanicity of their mother’s residence at time of birth and followed-up through to 30 June 2015. Linkage to State-based registers provided information on schizophrenia diagnosis and a range of covariates. Rates of being diagnosed with schizophrenia for each category of urbanicity were estimated using Cox proportional hazards models adjusted for covariates. Results: During follow-up, 1618 (0.4%) children in Western Australia and 11,875 (0.9%) children in Denmark were diagnosed with schizophrenia. In Western Australia, those born in the most remote areas did not experience lower rates of schizophrenia than those born in the most urban areas (hazard ratio = 1.02 [95% confidence interval: 0.81, 1.29]), unlike their Danish counterparts (hazard ratio = 0.62 [95% confidence interval: 0.58, 0.66]). However, when the Western Australian cohort was restricted to children of non-Aboriginal Indigenous status, results were consistent with Danish findings (hazard ratio = 0.46 [95% confidence interval: 0.29, 0.72]). Discussion: Our study highlights the potential for disadvantaged subgroups to mask the contribution of urban-related risk factors to risk of schizophrenia and the importance of stratified analysis in such cases.


Author(s):  
Yuko Yamaguchi ◽  
Marta Zampino ◽  
Toshiko Tanaka ◽  
Stefania Bandinelli ◽  
Yusuke Osawa ◽  
...  

Abstract Background Anemia is common in older adults and associated with greater morbidity and mortality. The causes of anemia in older adults have not been completely characterized. Although elevated circulating growth and differentiation factor 15 (GDF-15) has been associated with anemia in older adults, it is not known whether elevated GDF-15 predicts the development of anemia. Methods We examined the relationship between plasma GDF-15 concentrations at baseline in 708 non-anemic adults, aged 60 years and older, with incident anemia during 15 years of follow-up among participants in the Invecchiare in Chianti (InCHIANTI) Study. Results During follow-up, 179 (25.3%) participants developed anemia. The proportion of participants who developed anemia from the lowest to highest quartile of plasma GDF-15 was 12.9%, 20.1%, 21.2%, and 45.8%, respectively. Adults in the highest quartile of plasma GDF-15 had an increased risk of developing anemia (Hazards Ratio 1.15, 95% Confidence Interval 1.09, 1.21, P&lt;.0001) compared to those in the lower three quartiles in a multivariable Cox proportional hazards model adjusting for age, sex, serum iron, soluble transferrin receptor, ferritin, vitamin B12, congestive heart failure, diabetes mellitus, and cancer. Conclusions Circulating GDF-15 is an independent predictor for the development of anemia in older adults.


2021 ◽  
pp. 1-38
Author(s):  
Ala Al Rajabi ◽  
Geraldine Lo Siou ◽  
Alianu K. Akawung ◽  
Kathryn L McDonald ◽  
Tiffany R. Price ◽  
...  

ABSTRACT Current cancer prevention recommendations advise limiting red meat intake to <500g/week and avoiding consumption of processed meat, but do not differentiate the source of processed meat. We examined the associations of processed meat derived from red vs. non-red meats with cancer risk in a prospective cohort of 26,218 adults who reported dietary intake using the Canadian Diet History Questionnaire. Incidence of cancer was obtained through data linkage with Alberta Cancer Registry with median (IQR) follow-up of 13.3 (5.1) years. Multivariable Cox proportional hazards regression models were adjusted for covariates and stratified by age and gender. The median (IQR) consumption (g/week) of red meat, processed meat from red meat and processed meat from non-red meat were 267.9 (269.9), 53.6 (83.3), and 11.9 (31.8), respectively. High intakes (4th Quartile) of processed meat from red meat was associated with increased risk of gastro-intestinal cancer Adjusted Hazard Ratio (AHR) (95% CI): 1.68 (1.09 – 2.57) and colorectal cancers AHR (95% CI): 1.90 (1.12 – 3.22), respectively in women. No statistically significant associations were observed for intakes of red meat or processed meat from non-red meat. Results suggests that the carcinogenic effect associated with processed meat intake may be limited to processed meat derived from red meats. The findings provide preliminary evidence toward refining cancer prevention recommendations for red and processed meat intake.


2021 ◽  
Vol 10 (7) ◽  
pp. 1514
Author(s):  
Hilde Espnes ◽  
Jocasta Ball ◽  
Maja-Lisa Løchen ◽  
Tom Wilsgaard ◽  
Inger Njølstad ◽  
...  

The aim of this study was to explore sex-specific associations between systolic blood pressure (SBP), hypertension, and the risk of incident atrial fibrillation (AF) subtypes, including paroxysmal, persistent, and permanent AF, in a general population. A total of 13,137 women and 11,667 men who participated in the fourth survey of the Tromsø Study (1994–1995) were followed up for incident AF until the end of 2016. Cox proportional hazards regression analysis was conducted using fractional polynomials for SBP to provide sex- and AF-subtype-specific hazard ratios (HRs) for SBP. An SBP of 120 mmHg was used as the reference. Models were adjusted for other cardiovascular risk factors. Over a mean follow-up of 17.6 ± 6.6 years, incident AF occurred in 914 (7.0%) women (501 with paroxysmal/persistent AF and 413 with permanent AF) and 1104 (9.5%) men (606 with paroxysmal/persistent AF and 498 with permanent AF). In women, an SBP of 180 mmHg was associated with an HR of 2.10 (95% confidence interval [CI] 1.60–2.76) for paroxysmal/persistent AF and an HR of 1.80 (95% CI 1.33–2.44) for permanent AF. In men, an SBP of 180 mmHg was associated with an HR of 1.90 (95% CI 1.46–2.46) for paroxysmal/persistent AF, while there was no association with the risk of permanent AF. In conclusion, increasing SBP was associated with an increased risk of both paroxysmal/persistent AF and permanent AF in women, but only paroxysmal/persistent AF in men. Our findings highlight the importance of sex-specific risk stratification and optimizing blood pressure management for the prevention of AF subtypes in clinical practice.


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