[Dietary guidelines for osteoporosis-comparison among different countries]

Area of Science:

• Nutritional Science
• Public Health
• Gerontology

Background:

• Physician guidelines for osteoporosis are widely available globally.
• These guidelines often incorporate both pharmacological and non-pharmacological interventions.
• Non-pharmacological strategies frequently emphasize nutritional components, particularly calcium and vitamin D intake.

Purpose of the Study:

• To compare and contrast global physician guidelines for osteoporosis management.
• To analyze the nutritional recommendations within these guidelines, focusing on calcium and vitamin D.
• To identify similarities and differences in dietary advice across various countries.

Main Methods:

• Systematic review of physician-issued osteoporosis guidelines from multiple countries.
• Comparative analysis of recommended daily intake levels for calcium and vitamin D.
• Evaluation of other dietary recommendations such as protein, sodium, and caffeine intake.

Main Results:

• Calcium intake recommendations range from 1,200-1,500 mg/day (WHO, North America, Europe) to 800 mg/day (Japan).
• Vitamin D intake recommendations are generally 10-20 microg/day, with Japan recommending approximately 5 microg/day.
• Dietary advice on body weight, protein, sodium, and caffeine is largely consistent, but vitamin K and other micronutrients are less commonly included due to limited evidence.

Conclusions:

• Global osteoporosis guidelines highlight the importance of calcium and vitamin D, but recommended intake levels differ significantly.
• Nutritional components of osteoporosis management are broadly similar, with notable exceptions in specific nutrient targets for Japan.
• Further research is needed to strengthen evidence for the inclusion of other vitamins and minerals, like vitamin K, in osteoporosis guidelines.