Gender Differences in Vitamin D Status in China.

Area of Science:

• Endocrinology
• Public Health
• Nutritional Science

Background:

• Vitamin D insufficiency is a widespread health concern in China.
• Factors influencing vitamin D levels are diverse and require localized investigation.
• Understanding regional vitamin D status is crucial for public health interventions.

Purpose of the Study:

• To assess the vitamin D status of residents in Jinzhong city, China.
• To analyze the impact of gender on vitamin D levels within this population.
• To identify demographic groups at higher risk for vitamin D inadequacy.

Main Methods:

• A cross-sectional study involving 302 participants (176 men, 126 women).
• Collection of anthropometric data including body circumferences, height, and weight.
• Measurement of serum 25-hydroxyvitamin D [25(OH)D] concentrations.

Main Results:

• High prevalence of inadequate vitamin D: 69% in men and 75% in women.
• Women's mean 25(OH)D level (38.40±12.37 nmol/l) was significantly lower than men's (43.49±14.78 nmol/l).
• Young women displayed the lowest vitamin D levels, even below elderly women; gender was a significant factor (p<0.01).

Conclusions:

• Vitamin D deficiency is common among Jinzhong residents during winter.
• Women are more susceptible to inadequate vitamin D levels than men.
• Targeted public health strategies focusing on women may be necessary to improve vitamin D status.