Research shows that older adults in Kazakhstan with diabetes, high blood pressure, and obesity are severely deficient in potassium (getting only 33% of recommended amounts), calcium, and vitamins C and E, while consuming more than twice the recommended salt. According to Gram Research analysis of this 351-person study, these nutrient gaps affect men and women differently, in men, fat intake correlated with kidney stress, while in women, higher calcium intake was linked to better triglyceride levels. Correcting these micronutrient deficiencies and reducing sodium could help manage these chronic diseases.
Researchers studied 351 older adults in Kazakhstan (mostly women) who had diabetes, high blood pressure, and obesity. They found that nearly everyone was not getting enough potassium, calcium, and vitamins C and E, while eating way too much salt. Interestingly, how diet affected heart health markers was different for men and women. Men’s fat intake was linked to kidney function problems, while women showed different patterns. The study suggests that fixing these nutrient gaps and cutting back on salt could help manage these serious health conditions in older people.
Key Statistics
A 2026 cross-sectional study of 351 older adults in Kazakhstan found that participants were consuming only 34% of recommended potassium intake and more than twice the recommended sodium, with similar severe deficiencies in calcium and vitamins C and E.
In men with diabetes, high blood pressure, and obesity, total fat and saturated fat intake showed significant correlation with creatinine levels (a kidney function marker), while in women, calcium and riboflavin intake were inversely associated with triglycerides, demonstrating sex-specific dietary-biomarker relationships.
Among 351 older adults aged 60-90 with concurrent type 2 diabetes, hypertension, and obesity, median calcium intake reached only 33.6% of reference values in men and 38.1% in women, with thiamine intake at approximately 48-50% of recommended levels in both sexes.
The Quick Take
- What they studied: Whether the foods older adults eat affect their blood sugar, cholesterol, and other heart health markers, and if men and women show different patterns
- Who participated: 351 older adults aged 60-90 years (80 men and 271 women) from Kazakhstan who all had type 2 diabetes, high blood pressure, and obesity
- Key finding: Almost all participants weren’t eating enough potassium (only getting about one-third of what they need), calcium, vitamin C, vitamin E, and thiamine, while eating more than twice the recommended amount of salt
- What it means for you: If you’re an older adult with these health conditions, you may benefit from eating more fruits, vegetables, and dairy products while using less salt. However, talk to your doctor before making major diet changes, as individual needs vary.
The Research Details
This was a cross-sectional study, which means researchers looked at a group of people at one point in time rather than following them over months or years. The researchers recruited 351 older adults from four primary care clinics in Central Kazakhstan. All participants had three conditions at the same time: type 2 diabetes (high blood sugar), high blood pressure, and obesity (being significantly overweight).
Participants answered detailed questions about what they ate and drank over the past month. Researchers then compared their nutrient intake to official Kazakhstani dietary guidelines to see if they were getting enough vitamins and minerals. Blood samples were taken after fasting (not eating) overnight to measure important health markers like glucose, cholesterol, triglycerides, and kidney function.
The researchers analyzed the data separately for men and women because they suspected the relationship between diet and health markers might be different between sexes. They used statistical methods to find correlations (connections) between nutrient intake and blood test results.
This research approach is important because it shows real-world patterns in an understudied population. Central Asian older adults haven’t been well-researched before, so this provides new information about their specific nutritional challenges. By looking at men and women separately, the study reveals that diet affects men’s and women’s health differently, something that’s often missed when studies combine everyone together.
This study has several strengths: it measured actual blood markers rather than just asking about health, it included a reasonable sample size (351 people), and it looked at a real community population. However, because it’s cross-sectional, we can’t prove that poor nutrition causes the health problems, only that they occur together. The study was also mostly women (77%), so findings may not apply equally to men. Additionally, the study relied on people remembering what they ate, which can be inaccurate.
What the Results Show
The most striking finding was that nearly everyone in the study wasn’t getting enough essential nutrients. Potassium intake was particularly low, participants were only getting about one-third of the recommended amount. Calcium intake was similarly inadequate at roughly one-third to two-fifths of recommended levels. Vitamins C and E were also significantly deficient, with participants getting only 22-31% and 39-44% of recommended amounts respectively.
In sharp contrast, sodium (salt) intake was excessive in both men and women. Men were eating more than twice the recommended amount of salt, while women were eating close to twice the recommended amount. This is concerning because high sodium intake is linked to high blood pressure and heart disease.
When researchers looked at how diet affected blood markers, they found important sex differences. In men, eating more total fat and saturated fat was associated with higher creatinine levels (a sign of kidney stress). In women, however, these fat-diet connections weren’t found. Instead, women who ate more calcium and riboflavin (a B vitamin) had lower triglyceride levels (a type of blood fat).
Body weight emerged as the strongest predictor of triglyceride levels in men, suggesting that weight management may be more important than specific nutrients for controlling this heart risk factor in older men.
The study found widespread thiamine (vitamin B1) deficiency, with participants getting only about half the recommended amount. This is important because thiamine is essential for nerve function and energy metabolism. The pattern of nutrient deficiencies was remarkably similar between men and women, suggesting that the population as a whole faces common dietary challenges. However, the way these nutrient gaps affected blood markers differed significantly by sex, indicating that men and women may need different dietary interventions.
According to Gram Research analysis, this study adds important information about Central Asian populations, which have been understudied in nutrition research. Previous research in other populations has shown that potassium and calcium deficiency are common in older adults, but the severity found here (only one-third of recommended intake) is particularly striking. The sex-specific differences in how diet affects health markers align with emerging research suggesting that men and women metabolize nutrients differently and respond differently to dietary changes. The excessive sodium intake mirrors patterns seen in many developed and developing countries, though the magnitude here is notable.
This study has several important limitations. First, it’s cross-sectional, meaning we can see associations but can’t prove cause-and-effect. For example, we can’t say that low potassium causes kidney problems; they just occur together. Second, the study relied on participants remembering what they ate, which is often inaccurate. Third, the sample was 77% women, so results may not apply equally to men. Fourth, the study only looked at one point in time, so we don’t know if these patterns are stable or changing. Finally, the study was conducted in Kazakhstan, so findings may not apply to other populations with different food availability and cultural eating patterns.
The Bottom Line
For older adults with diabetes, high blood pressure, and obesity: (1) Increase potassium intake by eating more bananas, sweet potatoes, beans, and leafy greens: this is a high-confidence recommendation based on widespread deficiency. (2) Boost calcium through dairy products or fortified alternatives, moderate-to-high confidence. (3) Reduce salt intake significantly by cooking at home more and avoiding processed foods, high confidence based on excessive intake. (4) Eat more vitamin C-rich foods like citrus fruits and bell peppers, moderate confidence. Before making major dietary changes, consult your doctor or a registered dietitian, especially if you take medications for kidney disease or heart conditions.
This research is most relevant to older adults (60+) who have type 2 diabetes, high blood pressure, and obesity, especially those in Central Asian populations. Healthcare providers caring for older adults with multiple chronic conditions should pay attention. People with kidney disease should be cautious about increasing potassium without medical guidance. Younger adults and those without these specific health conditions may not see the same benefits.
Improving nutrient intake typically takes 4-8 weeks to show measurable changes in blood markers like triglycerides and cholesterol. However, some benefits like better energy and improved blood sugar control may be noticed within 2-3 weeks. Long-term benefits (reduced disease progression, better kidney function) may take 3-6 months to become apparent.
Frequently Asked Questions
What nutrients are older adults with diabetes and high blood pressure most likely to be missing?
Potassium, calcium, vitamins C and E, and thiamine are the most common deficiencies. A 2026 study of 351 older adults found potassium intake at only one-third of recommended levels, with similar gaps in other nutrients, while salt intake was dangerously high.
Does diet affect men and women’s heart health markers differently?
Yes. Research shows that in men, fat intake correlated with kidney function problems, while in women, calcium and riboflavin intake were linked to better triglyceride levels. This suggests men and women may need different dietary approaches for managing cardiometabolic health.
How much potassium should older adults be eating daily?
The recommended intake is 2,600-3,400 mg daily depending on kidney function, but the study found older adults were only getting about 900-1,100 mg. Consult your doctor before increasing potassium, especially if you have kidney disease.
Can changing my diet actually improve my blood sugar and cholesterol levels?
Research suggests dietary improvements can help, though changes typically take 4-8 weeks to show measurable effects on blood markers. The study found that addressing nutrient gaps and reducing sodium are priorities, but individual results vary, work with your doctor on a personalized plan.
What’s the easiest way to reduce salt intake while getting more potassium?
Cook at home more often using fresh ingredients, and flavor food with herbs instead of salt. Add potassium-rich foods like bananas, sweet potatoes, beans, and leafy greens to meals. Avoid processed and packaged foods, which account for most dietary sodium.
Want to Apply This Research?
- Track daily sodium intake (target: less than 2,300 mg) and potassium intake (target: 2,600-3,400 mg depending on kidney function) using the app’s food logging feature. Set weekly goals to gradually reduce salt while increasing potassium-rich foods.
- Start by identifying one high-sodium food you eat regularly and replace it with a lower-sodium alternative. For example, swap processed snacks for fresh fruit, or use herbs instead of salt for flavoring. Log this swap in the app to build momentum.
- Use the app to track nutrient intake weekly, focusing on the ‘micronutrient gaps’ identified in this research: potassium, calcium, vitamins C and E, and thiamine. Set reminders to eat specific foods (like a banana for potassium or an orange for vitamin C) and monitor how you feel and any changes in energy levels or blood sugar readings over 8-12 weeks.
This research describes associations between diet and health markers in a specific population (older Central Asian adults with diabetes, high blood pressure, and obesity) and does not establish cause-and-effect relationships. Individual nutritional needs vary significantly based on age, medications, kidney function, and other health conditions. Before making substantial dietary changes, especially regarding potassium intake if you have kidney disease or take certain medications, consult with your healthcare provider or a registered dietitian. This article is for educational purposes and should not replace professional medical advice.
This research translation is published by Gram Research, the science division of Gram, an AI-powered nutrition tracking app.
