Body mass index and economic productivity

Area of Science:

• Nutrition and Health
• Labor Economics
• Development Studies

Background:

• Existing research inconsistently links nutritional status to economic productivity.
• Many studies on nutrition and wages are male-dominated, with limited gender-disaggregated data.
• Pathways between improved nutrition and economic productivity remain underexplored.

Purpose of the Study:

• To review evidence on nutrition-productivity links.
• To present multi-country study results on body mass index (BMI) and productivity.
• To examine gender-specific nutrition-productivity relationships, particularly in Kenya.

Main Methods:

• Review of existing literature on nutrition and productivity.
• Analysis of multi-country data on BMI trends across genders and income levels.
• Examination of nutritional status (BMI, height) and energy expenditure in Kenyan women.

Main Results:

• Nutritional status shows a more consistent link with work capacity than economic productivity.
• Men's BMI correlates more consistently with household income than women's.
• In Kenya and The Gambia, women's BMI can decrease with rising household income, potentially due to time allocation in energy-intensive home production.
• BMI and height show a significant positive association with time spent working, indicating increased work capacity.

Conclusions:

• Improved nutritional status, indicated by BMI and height, enhances work capacity.
• Traditional economic productivity measures (e.g., wages) are inadequate for valuing women's work, especially unpaid home production.
• Development of appropriate valuation methods is crucial to capture nutrition-productivity links in women's labor.