Publications by authors named "John Kanis"

Mild cognitive impairment, dementia and osteoporosis are common diseases of ageing and, with the increasingly ageing global population, are increasing in prevalence. These conditions are closely associated, with shared risk factors, common underlying biological mechanisms and potential direct causal pathways. In this review, the epidemiological and mechanistic links between mild cognitive impairment, dementia and skeletal health are explored.

View Article and Find Full Text PDF

Context: Sclerostin inhibits canonical Wnt signaling, a pathway promoting bone formation. The effects of vitamin D3, omega-3 fatty acids (omega-3s), and exercise on serum sclerostin levels and bone metabolism are unclear.

Objective: To investigate the effects of 2000 IU/d vitamin D3, 1g/d omega-3s, and a simple home-based strength exercise program (SHEP), alone or in combination, on serum sclerostin and bone turnover marker levels.

View Article and Find Full Text PDF

Importance: Fragility fractures are often defined as those that occur after a certain age (eg, 40-50 years). Whether fractures occurring in early adulthood are equally associated with future fractures is unclear.

Objective: To examine whether the age at which a prior fracture occurred is associated with future fracture risk.

View Article and Find Full Text PDF
Article Synopsis
  • - The guidelines update the International Osteoporosis Foundation's (IOF) 20-year-old position paper on bone markers, reflecting advancements in bone biology and disorders.
  • - The authors introduce a new classification called Bone Status Indices (BSI) to replace outdated terms like bone turnover markers and metabolic markers for better clarity.
  • - The proposal includes standardized nomenclature, abbreviations, and measurement units for these indices to ensure consistency in the study and treatment of bone health.
View Article and Find Full Text PDF

Background: We aimed to investigate the effect of daily supplemental vitamin D, omega-3s, and a thrice-weekly home exercise program, alone or in combination, on change of appendicular lean muscle mass index (ALMI) and incident sarcopenia in older adults.

Methods: This is a secondary endpoint analysis of a 3-year randomized, double-blind, placebo-controlled trial with a 2 × 2 × 2 factorial design among 2157 community-dwelling, healthy adults aged 70 + years, from 2012 to 2018 (DO-HEALTH). Participants were randomized to 2000 IU/d vitamin D and/or 1 g/d marine omega-3s and/or exercise.

View Article and Find Full Text PDF
Article Synopsis
  • The study investigates the acceptance of osteoporosis medication among postmenopausal women across nine countries, focusing on how various factors like age and fracture history influence this willingness.
  • Findings reveal that 79.2% of participants accepted treatment at fracture probabilities equal to or below the recommended threshold, highlighting a potential gap in fracture risk communication.
  • Higher numeric literacy was linked to a greater willingness to accept treatment compared to those with lower literacy levels, suggesting that improving patient understanding of risk could enhance treatment acceptance.
View Article and Find Full Text PDF

Unlabelled: Sequential romosozumab-to-alendronate or sequential teriparatide-to-alendronate can be a cost-effective treatment option for postmenopausal women at very high risk of fracture.

Purpose: To estimate the 10-year probability of a major osteoporotic fracture (MOF) at which sequential treatment with romosozumab or teriparatide followed by alendronate, compared with alendronate alone, becomes cost-effective in a UK setting.

Methods: A microsimulation model with a Markov structure was used to simulate fractures, costs, and quality-adjusted life years (QALYs), in women receiving sequential treatment with either romosozumab or teriparatide followed by alendronate, compared with alendronate alone.

View Article and Find Full Text PDF

Importance: The Fracture Risk Assessment Tool (FRAX) is a fracture risk prediction tool for 10-year probability of major osteoporotic fracture (MOF) and hip fracture in the general population. Whether FRAX is useful in individuals with cancer is uncertain.

Objective: To determine the performance of FRAX for predicting incident fractures in individuals with cancer.

View Article and Find Full Text PDF

Unlabelled: Associations between different sarcopenia definitions and the risk of injurious falls were investigated in 75-80-year-old women in the Swedish SUPERB cohort. Only sarcopenia according to the Sarcopenia Definitions and Outcomes Consortium (SDOC) definition was associated with incident injurious falls with and without fractures in older women.

Purpose: To investigate the association between three commonly used sarcopenia definitions and the risk of injurious falls in a population of older Swedish women.

View Article and Find Full Text PDF
Article Synopsis
  • * The authors advocate for keeping ethnic and race-specific FRAX models in the US, suggesting they should be based on updated data related to fracture and death risks.
  • * The position opposing fixed bone mineral density thresholds is supported by the International Osteoporosis Foundation (IOF) and the European Society for Clinical and Economic Aspects of Osteoporosis, Osteoarthritis and Musculoskeletal Diseases (ESCEO), emphasizing the need for equity in fracture risk assessment.
View Article and Find Full Text PDF
Article Synopsis
  • - The International Osteoporosis Foundation (IOF) has published a position paper addressing partnerships with scientists from countries involved in armed conflicts.
  • - A commission within the IOF has assessed and recommended guidelines for such collaborations to ensure ethical considerations are met.
  • - The IOF Board has unanimously adopted these findings and recommendations, emphasizing a commitment to responsible engagement in scientific partnerships.
View Article and Find Full Text PDF

Background: Low grip strength and gait speed are associated with mortality. However, investigation of the additional mortality risk explained by these measures, over and above other factors, is limited.

Aim: We examined whether grip strength and gait speed improve discriminative capacity for mortality over and above more readily obtainable clinical risk factors.

View Article and Find Full Text PDF
Article Synopsis
  • Researchers developed a protein-based risk score for predicting hip fractures using an aptamer-based proteomic platform that showed promise in initial studies.
  • The risk score demonstrated strong predictive capabilities and improved fracture discrimination when validated in additional health study cohorts and in a UK Biobank cohort.
  • While the proteomic risk score outperformed existing tools, including the FRAX assessment, its clinical usefulness beyond current methods and the modest improvement in prediction need further evaluation.
View Article and Find Full Text PDF

Objective: Although aging has a strong impact on visual acuity (VA) and falls, their interaction is understudied in generally healthy older adults. This study aimed to examine if and to what extent baseline VA is associated with an increased risk of all and injurious falls over 3 years in generally healthy community-dwelling older adults.

Design: Observational analysis of DO-HEALTH, a double-blind, randomized controlled trial.

View Article and Find Full Text PDF

Osteoporosis and cardiovascular disease (CVD) are highly prevalent in older women, with increasing evidence for shared risk factors and pathogenesis. Although FRAX was developed for the assessment of fracture risk, we hypothesized that it might also provide information on CVD risk. To test the ability of the FRAX tool and FRAX-defined risk factors to predict incident CVD in women undergoing osteoporosis screening with DXA, we performed a retrospective prognostic cohort study which included women aged 50 yr or older with a baseline DXA scan in the Manitoba Bone Mineral Density Registry between March 31, 1999 and March 31, 2018.

View Article and Find Full Text PDF
Article Synopsis
  • A study examined the effects of vitamin D3, omega-3s, and a home-based exercise program (SHEP) on bone mineral density (BMD) in healthy older adults aged 70 and above over three years.
  • Results showed no significant benefits from omega-3s or SHEP, but vitamin D3 improved total hip BMD and lumbar spine BMD in men with modest gains.
  • While there were some positive effects of vitamin D treatment, the overall clinical significance of these findings remains uncertain.
View Article and Find Full Text PDF

Unlabelled: This study evaluated the cost-effectiveness of sequential treatment with romosozumab-to-alendronate compared to alendronate monotherapy and teriparatide-to-alendronate, in postmenopausal osteoporotic women from a Belgian healthcare perspective. Romosozumab-to-alendronate was found to be cost-effective compared to alendronate monotherapy and dominant compared to teriparatide-to-alendronate for osteoporotic women at high risk of fracture in Belgium.

Purpose: This study aimed to evaluate the cost-effectiveness of sequential treatment with romosozumab followed by alendronate compared to alendronate monotherapy and teriparatide followed by alendronate, in postmenopausal osteoporotic women at high risk of fracture, from a Belgian healthcare perspective.

View Article and Find Full Text PDF
Article Synopsis
  • Osteoporosis has traditionally been seen as a women's disease, but recent evidence highlights its significant impact on men, necessitating more balanced research and guidelines for both genders.
  • An international working group has developed GRADE-assessed recommendations focusing on diagnosing, monitoring, and treating osteoporosis in men, based on a thorough review of current research.
  • Key areas of focus include understanding bone densitometry interpretations, treatment thresholds, and evaluating the economic impact of interventions, while future research needs to explore the effectiveness of various osteoporosis medications.
View Article and Find Full Text PDF

The purpose of this study was to investigate the prevalence of three sarcopenia definitions and their associations with fracture risk in older Swedish women when adjusted for fracture risk assessment (FRAX)-based risk factors; 2,883 women with a mean age of 77.8 years were included. Sarcopenia was defined based on the Sarcopenia Definitions and Outcomes Consortium (SDOC; low handgrip strength [kg] and gait speed (m/s)), revised European Working Group on Sarcopenia in Older People (EWGSOP2; low appendicular lean mass index, appendicular lean mass [ALM]/height; kg/m2], and hand grip strength [kg]), and Asian Working Group for Sarcopenia (AWGS; low ALM (kg), and hand grip strength [kg]) definitions.

View Article and Find Full Text PDF
Article Synopsis
  • A meta-analysis of data from 46 cohorts found that individuals who reported falling in the past year had an increased risk of fractures, highlighting falls as an important factor for fracture risk assessment.
  • Previous falls were correlated with a significant rise in fracture risks for both men and women, with hazard ratios indicating that the risk is greater for men.
  • The study suggests that falls should be included in the FRAX® algorithm, which currently does not consider this important risk factor for osteoporotic fractures.
View Article and Find Full Text PDF

Background: The effects of non-pharmaceutical interventions in the prevention of cardiovascular diseases (CVD) in older adults remains unclear. Therefore, the aim was to investigate the effect of 2000 IU/day of vitamin D, omega-3 fatty acids (1 g/day), and a simple home strength exercise program (SHEP) (3×/week) on lipid and CVD biomarkers plasma changes over 3 years, incident hypertension and major cardiovascular events (MACE).

Methods: The risk of MACE (coronary heart event or intervention, heart failure, stroke) was an exploratory endpoint of DO-HEALTH, incident hypertension and change in biomarkers were secondary endpoints.

View Article and Find Full Text PDF

Objectives: FRAX® uses clinical risk factors, with or without bone mineral density (BMD), to calculate 10-year fracture risk. Rheumatoid arthritis (RA) is a risk factor for osteoporotic fracture and a FRAX input variable. FRAX predates the current era of RA treatment.

View Article and Find Full Text PDF
Article Synopsis
  • - Patients want information about their fracture risk, but only a little over half have received it, according to the RICO study.
  • - The study involved structured interviews with 332 women at risk of fractures from multiple countries and found that most preferred visual tools for understanding their risk.
  • - Nearly all participants expressed the desire for improved discussions with healthcare professionals about their fracture risk and consequences, highlighting a communication gap in healthcare.
View Article and Find Full Text PDF

FRAX, which is used to assess fracture probability, considers body mass index (BMI), but BMI may not reflect individual variation in body composition and distribution. We examined the effect of BMI-discordant abdominal thickness on FRAX-derived fracture probability for major osteoporotic fracture (MOF) and hip fracture. We studied 73,105 individuals, mean age 64.

View Article and Find Full Text PDF