Comparative Study of Serum Vitamin D Levels in Population of Urban and Rural Areas

A total of 120 participants were included in this study, consisting of 60 individuals from urban areas and 60 individuals from rural areas.

 

Demographic Characteristics

The mean age of participants in the urban group was 35.2 ± 10.4 years, whereas the rural group had a mean age of 36.8 ± 11.2 years. The gender distribution was similar in both groups.

 

Table 1: Demographic Characteristics

 

Vitamin D Status

The prevalence of vitamin D deficiency was considerably higher in the urban population compared with the rural population.

 

Table 2: Vitamin D Status in Study Population

 Mean Vitamin D Levels

The mean serum vitamin D level was significantly lower in the urban group compared with the rural group.

 

Table 3: Mean Serum Vitamin D Levels

 Key Findings

• Vitamin D deficiency was significantly more prevalent in urban populations.
• Rural participants demonstrated higher mean vitamin D levels.
• Greater sunlight exposure and outdoor activity were associated with improved vitamin D status.

The present study demonstrated a clear difference in serum vitamin D levels between urban and rural populations. The findings revealed that vitamin D deficiency was significantly more common in urban participants compared with rural individuals.

 These results are consistent with previous studies indicating that urbanization and lifestyle changes contribute to reduced sunlight exposure and increased risk of vitamin D deficiency (Mithal et al., 2009).

 Urban residents often engage in indoor occupations, spend extended periods in offices or educational institutions, and rely heavily on transportation. These factors reduce the duration of sunlight exposure required for adequate vitamin D synthesis in the skin. Additionally, the use of sunscreen and protective clothing may further limit UVB exposure (Holick, 2007).

 Air pollution is another important factor that may contribute to vitamin D deficiency in urban areas. Pollutants in the atmosphere can block ultraviolet radiation, thereby reducing the ability of sunlight to stimulate vitamin D synthesis (Ritu & Gupta, 2014).

 In contrast, rural populations typically participate in outdoor occupations such as agriculture and manual labor. Prolonged sunlight exposure in these settings may explain the higher mean vitamin D levels observed in the rural group.

 However, it is noteworthy that a considerable proportion of rural participants also exhibited vitamin D deficiency. This suggests that vitamin D deficiency is not limited to urban populations but represents a broader public health concern affecting multiple demographic groups.

 Dietary intake of vitamin D-rich foods also appears to be inadequate in many populations. Foods naturally rich in vitamin D, such as fatty fish and fortified dairy products, are not commonly consumed in sufficient quantities (Palacios & Gonzalez, 2014).

 Vitamin D deficiency has been linked to several adverse health outcomes including osteoporosis, fractures, cardiovascular diseases, diabetes, and immune disorders (Lips, 2001). Therefore, addressing this deficiency through public health interventions is essential.

 The findings of the present study highlight the importance of increasing awareness regarding adequate sunlight exposure, balanced diet, and vitamin D supplementation where necessary.

 However, this study has certain limitations. The sample size was relatively small and seasonal variation in vitamin D levels was not evaluated. Larger studies with extended follow-up periods are needed to further investigate these associations.

The study demonstrates that vitamin D deficiency is significantly more prevalent in urban populations compared with rural populations. Reduced sunlight exposure, indoor lifestyle, and environmental factors appear to play major roles in this disparity.

 Public health initiatives focusing on awareness, lifestyle modification, improved dietary intake, and vitamin D supplementation are necessary to address this growing health problem.

 Ethical Approval: This study was approved by the Institutional Ethics Committee.

Conflict of Interest: The authors declare no conflict of interest.

Funding: No funding was received for this study.

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