Accra:The declining nutritional quality of food crops, exacerbated by soil nutrient depletion and limited dietary diversity, is becoming an increasingly severe threat to public health in Bangladesh and worldwide. Millions of people are experiencing hidden hunger despite consuming sufficient calories.
According to Bangladesh Sangbad Sangstha, the nutritional value of food crops globally is plummeting due to modern intensive agricultural practices and climate change, as highlighted in a global research report. Although crop yields have increased, essential micronutrient concentrations in rice, wheat, and vegetables have dropped by 20 to 50 percent, leading to widespread 'hidden hunger' from a lack of vital vitamins and minerals.
A comprehensive report, "Hollow Harvests Rebuilding the nutritional value of crops in an age of abundant calories," published by Deep Science Ventures and the Marc Leonard Trust, reveals these findings. A 2026 meta-analysis by Leiden University researchers, examining nutritional measurements across 43 crop species, found that rising carbon dioxide levels dilute protein, zinc, and iron in crops.
Experts attribute the nutrient decline to modern agricultural practices that prioritize high yields over nutritional quality. This focus on volume has increased food production but left crops nutritionally depleted, resulting in micronutrient deficiencies in populations that consume enough calories.
In Bangladesh, the crisis is particularly acute. The National Micronutrient Survey reports that 44 percent of children and 57 percent of adult women suffer severe zinc deficiencies. The widespread consumption of low-nutrient-density rice, coupled with a lack of dietary diversity, contributes to these deficiencies.
Soil degradation further aggravates the issue, with nearly 76.2 percent of Bangladesh's cultivable land facing moderate to severe nutrient depletion. Organic matter levels in agricultural land have dropped significantly, and micronutrient shortages are widespread, affecting millions of hectares.
International nutritionists warn that many modern wheat varieties do not meet zinc content standards, leading to ineffective dietary guidelines. The World Health Organization identifies declining crop nutrition as a major factor in rising anemia and malnutrition rates, posing a challenge to achieving global nutrition goals.
To address the crisis, the Bangladesh Rice Research Institute has developed biofortified rice varieties to improve zinc intake. However, consumer preferences for polished rice reduce these benefits. Efforts are underway to develop rice varieties that meet more substantial nutritional needs.
Experts call for a shift in agricultural policies to prioritize nutrient yield over crop volume. They advocate for regenerative farming practices and diversification into traditional, nutrient-dense grains to restore soil health and improve food security. Ensuring nutrient-rich food for future generations is now seen as a critical global challenge.