怎样算“有效”晒太阳？看影子就知道

Core Viewpoint - Osteoporosis is increasingly recognized as a silent epidemic, with various lifestyle factors affecting bone health, prompting experts to provide guidance on maintaining healthy bones during the "2025 Healthy Bones Science Communication Conference" in China [1] Group 1: Risk Factors for Osteoporosis - Both low body weight and obesity increase the risk of fractures, with abdominal obesity being particularly concerning [2] - Rapid weight loss can lead to nutritional deficiencies, hormonal imbalances, and increased fracture risk, especially in young women [2] Group 2: Age and Bone Health - Bone mass begins to decline significantly between the ages of 40 and 50, marking a critical point for osteoporosis prevention [3] Group 3: Vitamin D and Sun Exposure - Adequate sunlight exposure is essential for vitamin D synthesis, and excessive sun protection can hinder this process [4] - Dietary sources of vitamin D include fatty fish, and supplements are recommended for those with insufficient sun exposure [4] Group 4: Treatment Approaches - Calcium supplementation alone is insufficient for managing osteoporosis; a combination of calcium, vitamin D, and other medications is necessary for effective treatment [5]