Hidden hunger affects nearly half of those with type 2 diabetes, with deficiencies in vital nutrients like vitamin D, magnesium, and B12 prevalent globally.
Micronutrient deficiencies,
such as low vitamin D and magnesium, are alarmingly common in people with type
2 diabetes, affecting nearly half globally
Women and those in the Americas are at higher risk, and the study
underscores the importance of addressing not just energy metabolism but also
overall nutrition. Researchers call for targeted interventions and further
studies to explore the causes and solutions to these deficiencies.
Micronutrient Deficiency in Type
2 Diabetes
Micronutrient deficiencies, where
levels of essential vitamins and minerals are too low for proper bodily
function, are commonly found in people with type 2 diabetes, according to a
pooled data analysis published today (January 29) in the journal BMJ Nutrition,
Prevention & Health.
The analysis highlights vitamin D as
the most commonly deficient micronutrient, with women at greater risk than men.
These deficiencies, often referred to as “hidden hunger,” pose a significant
health challenge.
Researchers explain that type 2
diabetes is influenced by factors such as genetic predisposition, environmental
conditions, sedentary lifestyles, unhealthy diets, and obesity. Previous
studies suggest that micronutrients play a critical role in the disease’s
development, potentially impacting glucose metabolism and insulin signaling pathways.
Exploring
Global Data on Micronutrient Deficiencies
To estimate the global prevalence of
micronutrient deficiencies in people with type 2 diabetes, researchers reviewed
databases to identify relevant studies and pooled the available data for
analysis.
The final analysis included 132
studies involving 52,501 participants, published in multiple languages between
1998 and 2023. Nearly all the studies (except for three) were conducted in
hospital settings.
The analysis revealed that 45% of
people with type 2 diabetes globally have micronutrient deficiencies (vitamins,
minerals, and electrolytes), with the prevalence slightly lower (40%) among
those with diabetes-related complications. Regional differences were attributed
to varying dietary habits, lifestyle factors, and cultural practices.
Vitamin D deficiency was the most
common, affecting 60.5% of individuals with type 2 diabetes. Magnesium
deficiency was also widespread, affecting 42%, while iron deficiency impacted
28%. Vitamin B12 deficiency was reported in 29% of participants and was even
more frequent among those taking metformin.
Regional and Gender Differences
in Deficiency Rates
Further stratification of the pooled
data showed that prevalence was higher in women with the condition than in men
at nearly 49%, and highest among patients in the Americas (54%).
Most of the included studies were
cross-sectional, making it difficult to establish causality, nor was it clear
whether the micronutrient deficiency preceded poor glycaemic control or was a
consequence of it, caution the researchers.
And as there are no valid
population-based studies looking at micronutrient deficiency, it’s impossible
to draw comparisons between patients with type 2 diabetes and the general
population, they add.
Implications
for Research and Policy
“This systematic review exemplifies
the double burden of malnutrition in action, whereby nutritional deficiencies
and diet-related non-communicable diseases, such as type 2 diabetes, co-exist,”
comments Shane McAuliffe, Visiting Senior Academic Associate, NNEdPro Global
Institute for Food, Nutrition and Health, which co-owns the journal.
“The treatment of type 2 diabetes
often tends to focus on energy metabolism and macronutrients, but the
identification of a higher prevalence of specific micronutrient deficiencies in
those affected is a reminder that optimizing overall nutrition should always be
a priority.
“The findings should help to focus research and policy initiatives aimed at furthering our understanding of the causes and effects of these deficiencies and the potential for targeted and tailored interventions.”