Publications by authors named "Norman Bitterlich"

Purpose: Increasing life expectancy and rising populations create new challenges for science, economy, politics, society and each individual. The bio-functional status (BFS) as a theoretical model incorporates the International Classification of Functioning (ICF) and the concept of active and healthy ageing (AHA). This study addresses the question of which the strengths and resources have the greatest positive impact on bio-functional age (BFA) and might be influencable.

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Background: Lifestyle in Western countries has significantly changed during recent decades. These and other factors have increased the prevalence of overweight and obesity, leading to a higher risk of noncommunicable diseases such as cardiovascular disease and cancer. A balanced diet has been shown to predict better health, so several public healthcare strategies aim to encourage "healthy" food choices.

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Background: Despite the widespread prevalence of obesity and its potential adverse impacts on health, the majority of interventions aimed at weight loss stay ineffective. This study aimed to assess illness perception in people with overweight/obesity and its impact on bio-functional age (BFA) and cognitive patterns governing eating and movement behavior.

Methods: A total of 40 subjects from the original overweight/obesity subcohort of the Bern Cohort Study 2014 (BeCS14) were included and assessed for a follow-up from 2019-11-29 to 2020-07-14.

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Background: The aim was to conduct a benchmark pilot study to find the best practice for consultation hours in the field of gynecological endocrinology. Suitable benchmarking participants were found in China, Germany, Greece, and Switzerland. Specifically, the study aimed to find the most time-efficient and beneficial consultation type in gynecological endocrinology focused on menopause and whether a shorter face-to-face consultation correlates with lower patient satisfaction.

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In a prior, retrospective study, 76% of patients with advanced neuroendocrine tumors undergoing Lu-DOTATOC molecular radiotherapy (MRT) showed their best response within 8 months from the first MRT cycle. In 24% of patients, latency was much greater up to >22 months after the first cycle, and long after near-complete decay of Lu from the last cycle. An immune response induced by MRT seems a likely explanation.

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Purpose: Polycystic ovary syndrome (PCOS) management has hardly been standardized until recent years. Despite the existence of a detailed, evidence-based guideline published by the European Society of Human Reproduction and Embryology (ESHRE), it remains unclear to what extent healthcare providers adhere to this guideline. Our aim is to evaluate the gynaecological medical care provided in women with PCOS, particularly in terms of mental health, from the patients' perspective.

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Up until now, the measurement of Quality of Life (QoL) was based on validated subjective rating tools rather than objective measurement. To become more independent of the self-assessment of probands, a way to objectively measure QoL should be found. A monocenter, cross-sectional, observational, non-interventional trial was performed from 2012 to 2014 at Inselspital Bern to evaluate the bio-functional status (BFS), a complex, generic, non-invasive, sex- and age-validated assessment tool, in a wide range of areas.

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Polycystic ovary syndrome (PCOS) management has hardly been standardized until recent years. There is an accurate, evidence-based guideline published by the European Society of Human Reproduction and Embryology (ESHRE). However, it remains unclear to which extent, if at all, the guideline is followed by health care providers.

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The national Olympic committee of Switzerland has conducted an online survey among female elite athletes with a focus on cycle disorders, contraception, and injuries in 2021. A total of 1,092 female elite athletes from 107 different sports were asked to answer the questionnaire. A descriptive analysis was carried out to determine location parameters and create frequency tables.

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Background: Chronic low-grade inflammation is associated with an increased risk of chronic disease and mortality. The objective of the study was to test the effect of a healthy lifestyle intervention on biomarkers of inflammation (among other risk markers).

Methods: We conducted a non-randomized controlled trial with mostly middle-aged and elderly participants from the general population in rural northwest Germany (intervention: n = 114; control: n = 87).

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Article Synopsis
  • Overweight individuals may have a higher risk of developing kidney stones, prompting research on weight loss diets to understand their effects on stone formation.
  • A study compared two weight loss diets—one including meal replacements and the other conventional meals—on risk factors for kidney stones among overweight women without a prior history of stones.
  • Results showed that the meal replacement group experienced greater weight loss and overall improvement in cardiometabolic health, including better reductions in uric acid levels compared to the conventional diet group.
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Chronic non-communicable diseases (NCD) are the major reason for death, morbidity, loss of independency and public health cost. NCD prevalence could be significantly reduced by adopting a healthy lifestyle. This cross-sectional cohort study (online survey) in 221 women aimed to assess NCD awareness, knowledge about NCD prevention and willingness to adopt a healthier lifestyle in women.

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Chronic psychological stress can result in physiological and mental health risks via the activation of the hypothalamic-pituitary-adrenal (HPA) axis, sympathoadrenal activity and emotion-focused coping strategies. The impact of different stress loads on cardiometabolic risk is poorly understood. This post hoc analysis of a randomized pilot study was conducted on 61 participants (18-65 years of age) with perceived chronic stress.

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Purpose: This study aims to verify that the mental-cognitive domain of the validated generic bio-functional status (BFS)/bio-functional age (BFA) assessment tool, incorporating the concept of Active and Healthy Ageing (AHA), reflects cognitive performance. In addition, the effects of chronic stress exposure on the mental-cognitive BFS/BFA should be investigated.

Methods: The study was carried out as a monocenter, cross-sectional, observational, non-interventional trial (Bern Cohort Study 2014, BeCS-14) with the participation of 147 non-pediatric, non-geriatric subjects.

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Despite the importance of dietary management of cystinuria, data on the contribution of diet to urinary risk factors for cystine stone formation are limited. Studies on the physiological effects of diet on urinary cystine and cysteine excretion are lacking. Accordingly, 10 healthy men received three standardized diets for a period of five days each and collected daily 24 h urine.

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Patients with intestinal fat malabsorption and urolithiasis are particularly at risk of acquiring fat-soluble vitamin deficiencies. The aim of the study was to evaluate the vitamin status and metabolic profile before and after the supplementation of fat-soluble vitamins A, D, E and K (ADEK) in 51 patients with fat malabsorption due to different intestinal diseases both with and without urolithiasis. Anthropometric, clinical, blood and 24-h urinary parameters and dietary intake were assessed at baseline and after ADEK supplementation for two weeks.

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Background: The 'Western diet' typically consumed in industrialized countries is characterized by high amounts of processed cereal grains and animal products while being low in vegetables, tubers, and fruits. This dietary behavior leads to imbalances of acid-base status in favor of the acids and may cause low-grade metabolic acidosis (LGMA) that is associated with negative effects on health in the long run, including urolithiasis, bone loss, and even cardiometabolic diseases. Therefore, it has become of great interest to find dietary strategies that can be used to neutralize the acid load associated with Western diets.

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Objectives: To demonstrate that the mental-cognitive domain of the validated generic bio-functional status (BFS)/bio-functional age (BFA) assessment tool reflects cognitive performance, and so meets the needs of the European Innovation Partnership on Active and Healthy Ageing (EIP-AHA).

Study Design: Monocenter, cross-sectional, observational, non-interventional trial (Bern Cohort Study 2014, BeCS-14) (Cantonal Ethics Committee, KEK-BE 023112).

Main Outcome Measures: Ratings on the mental-cognitive BFS domain and on a validated cognitive performance test battery (Inventar der Gedächtnisdiagnostik; IGD) in 47 healthy, educated, middle-class, midlife men and women.

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The aim of the study was to represent chronic stress exposure by a complex generic Active and Healthy (AHA) diagnostic assessment tool incorporating ICF. This is a single-centre, cross-sectional, observational, non-interventional, non-randomized trial in University based women's hospital, division of Gynecological Endocrinology and Reproductive Medicine. All participants followed a standardized, holistic battery of biopsychosocial assessments consisting of bio-functional status (BFS), bio-functional age (BFA) and the questionnaire for chronic stress exposure (TICS).

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The objective of this study was to examine the effect of a 3-month weight-loss-stabilization phase (phase 2) following a successful 3-month weight-loss phase (phase 1), including a conventional energy-restricted diet with (MR) or without (C) meal replacement, on the cardiometabolic risk profile in 80 overweight women. In phase 2, both groups continued to significantly reduce weight and sustained the significant decreases in waist circumference and LDL-C. During the study, folic acid concentration significantly increased in the MR-group, while homocysteine concentration significantly worsened in the C-group.

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Purpose: It is controversial who should be recommended to undergo natural cycle IVF (NC-IVF). Therefore, objective prognostic criteria which are already known at the time of counselling were defined.

Methods: A retrospective observational study was performed with 201 couples (age 34.

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Background: Cardiac arrhythmias (CA) are very common and may occur with or without heart disease. Causes of these disturbances can be components of the metabolic syndrome (MetS) or deficits of micronutrients especially magnesium, potassium, B vitamins and coenzyme Q10. Both causes may also influence each other.

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Purpose: Obesity is pandemic. Yet, the success of most weight loss programmes is poor. The aim of the study was to assess illness perception in overweight/obese people and its impact on bio-functional age (BFA) reflecting physical, mental, emotional and social functioning.

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Chronic non-communicable diseases (NCDs) are the major reason for death and morbidity worldwide. As many NCDs are initially asymptomatic, online risk calculators with easy and inexpensive access have been developed and validated in order to facilitate early NCD detection and prevention. The aim of this study was to assess the awareness, use and applicability of NCD risk calculators among physicians in private practice in the canton of Bern, Switzerland.

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Chronic work-life stress leads to dysfunction of the hypothalamus⁻pituitary⁻adrenal axis, the autonomic nervous system, and the serotonergic system, with resultant impairment of overall well-being. Aim of the study was to improve perceived stress by a specific amino acid composition with micronutrients in the verum versus placebo group. A total of 59 participants (18⁻65 years) with self-reported perceived chronic stress and exhaustion conditions participated in this randomized, double-blind, placebo-controlled study.

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