Katri Sääksjärvi

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OBJECTIVE To investigate whether serum vitamin D level predicts the risk of Parkinson disease. DESIGN Cohort study. SETTING The study was based on the Mini-Finland Health Survey, which was conducted from 1978 to 1980, with Parkinson disease occurrence follow-up through the end of 2007. During the 29-year follow-up period, 50 incident Parkinson disease(More)
OBJECTIVE To examine the prediction of coffee consumption on the incidence of Parkinson's disease. SUBJECTS AND METHODS The study population comprised 6710 men and women, aged 50-79 years and free from Parkinson's disease at the baseline. At baseline, enquiries were made about coffee consumption in a self-administered questionnaire as the average number(More)
The risk factors for Parkinson’s disease (PD) are not well established. We therefore examined the prediction of various lifestyle factors on the incidence of PD in a cohort drawn from the Finnish Mobile Clinic Health Examination Survey, conducted in 1973–1976. The study population comprised 6,715 men and women aged 50–79 years and free of PD at the(More)
Vitamin D has been suggested to protect against depression, but epidemiological evidence is scarce. The present study investigated the relationship of serum 25-hydroxyvitamin D (25(OH)D) with the prevalence of depressive and anxiety disorders. The study population consisted of a representative sample of Finnish men and women aged 30-79 years from the Health(More)
Previous studies on individual foods and nutrients and Parkinson's disease (PD) risk have been inconsistent. Furthermore, only one study has examined the association between the quality of diet and PD. We investigated the prediction of food groups and diet quality on PD in the Finnish Mobile Clinic Survey (1966-72). The population comprised 4524(More)
BACKGROUND High vitamin D status has been hypothesized to protect against dementia. The aim of the current study was to investigate whether serum 25-hydroxyvitamin D (25(OH)D) level predicts dementia risk. METHODS The study was based on the Mini-Finland Health Survey. The study population consisted of 5010 men and women, aged 40-79 years, and free of(More)
BACKGROUND The objective of this study was to assess the agreement and repeatability of 2 methods of measuring habitual coffee consumption, and to examine their homogeneity with respect to socioeconomic and lifestyle factors. METHODS Data on coffee consumption were collected from 4254 subjects by means of a health questionnaire (HQ) and a 1-year dietary(More)
Dyslipidaemia, hypertension and low-grade inflammation increase the risk of CVD. In the present meta-analysis, we examined whether adherence to a healthy Nordic diet, also called the Baltic Sea diet, may associate with a lower risk of these cardiometabolic risk factors. In 2001-2007, three cross-sectional Finnish studies were conducted: the Dietary,(More)
BACKGROUND Poor sleep tends to be patterned by sociodemographic and socioeconomic factors. The aim of this study was to examine the associations of sociodemographic and socioeconomic factors with sleep duration and insomnia-related symptoms across life course. METHODS We used cross-sectional Health 2000 Survey (2000-2001) among a total of 5,578 adult(More)
INTRODUCTION Inconsistent results regarding the association between the components of metabolic syndrome and Parkinson's disease (PD) have been reported. We investigated whether the metabolic syndrome or its components, or serum total cholesterol, predict PD incidence in a prospective cohort study design. METHODS The study was based on the Mini-Finland(More)