No Association between Vitamin D and Weight Gain: A Prospective, Population-Based Study

Area of Science:

• Endocrinology
• Nutritional Science
• Public Health

Background:

• The relationship between vitamin D and weight gain is debated due to study limitations.
• Investigating vitamin D's role in weight change is crucial for public health.

Purpose of the Study:

• To examine the association between vitamin D levels and changes in weight and waist circumference over 5 and 10 years.
• To clarify the controversial link between vitamin D and weight gain using a prospective cohort study.

Main Methods:

• A population-based prospective cohort study in Lausanne, Switzerland.
• Included participants aged 35-75 years, assessing weight and waist change at 5- and 10-year follow-ups.
• Categorized participants based on baseline vitamin D status: normal, insufficiency, and deficiency.

Main Results:

• No significant association was found between vitamin D categories and weight change at 5 years (p=0.159) or 10 years (p=0.588).
• No significant association was observed for waist circumference change at 5 years (p=0.792) or 10 years (p=0.259).
• Multivariate-adjusted analyses showed no link between vitamin D status and anthropometric changes over the study period.

Conclusions:

• Vitamin D status is not associated with weight gain or increased waist circumference over 5 or 10 years.
• The findings suggest vitamin D levels do not influence long-term weight management in this population.