:max_bytes(150000):strip_icc():format(jpeg)/Health-GettyImages-2234702118-2c8e09d544ad44f18db51a3e9dee919f.jpg "A woman wearing a rust-colored linen shirt checks a glucose monitoring device. Whole food ingredients like carrots, blueberries, raspberries, sit on the counter in front of her")
- People with diabetes may be more likely to have low levels of nutrients like magnesium, vitamin B12, and vitamin D.
- Some nutrient gaps can be linked to blood sugar changes, medications, or how the body absorbs nutrients.
- Eating a varied, nutrient-rich diet can help support long-term health, along with blood sugar management.
People with diabetes often focus on carbohydrate intake and blood sugar management, but getting enough vitamins and minerals is also important for overall health. Research suggests that some nutrient deficiencies are more common in people with diabetes. This may be due to medications, changes in appetite, or how the body absorbs certain nutrients.
1. Magnesium
Magnesium plays a key role in blood sugar regulation, nerve function, and muscle health. Low magnesium levels are more common in people with diabetes, partly because high blood sugar can increase magnesium loss through urine, especially when blood sugar is not well managed.
Some studies suggest that low magnesium levels may also make it harder for the body to use insulin. Symptoms of deficiency can include muscle cramps, fatigue, weakness, and irregular heartbeat in severe cases.
Foods rich in magnesium include pumpkin seeds, almonds, black beans, spinach, and whole grains. Some people may also need supplements, though high doses of magnesium can cause digestive side effects such as diarrhea.
2. Vitamin B12
Vitamin B12 helps support healthy nerves and red blood cell production. People who take metformin, one of the most common medications for type 2 diabetes, may have a higher risk of vitamin B12 deficiency because the medication can reduce B12 absorption over time.
Low B12 levels can sometimes cause symptoms that overlap with diabetic nerve damage, including numbness, tingling, balance problems, fatigue, and memory changes.
Animal foods like fish, eggs, dairy products, meat, and poultry naturally contain vitamin B12. Fortified cereals and plant-based milks can also provide B12, especially for people who follow vegetarian or vegan diets.
3. Vitamin D
Vitamin D helps the body absorb calcium and supports the immune system, bone health, and muscle function. Low vitamin D levels are common in the general population, but research suggests they may be especially common in people with diabetes.
Some studies have linked low vitamin D levels to reduced insulin sensitivity, though researchers are still studying exactly how the two are connected.
Fatty fish, egg yolks, and fortified dairy products contain vitamin D, but sunlight exposure also helps the body produce it naturally through the skin. In some cases, healthcare providers may recommend vitamin D supplements if blood levels are low.
4. Potassium
Potassium helps regulate fluid balance, supports muscle and nerve function, and helps control blood pressure. Some people with diabetes may have low potassium levels due to certain medications, frequent urination related to high blood sugar, or kidney-related complications.
Low potassium can cause muscle weakness, fatigue, constipation, and, in more severe cases, abnormal heart rhythms.
Potassium-rich foods include bananas, potatoes, beans, yogurt, tomatoes, avocados, and leafy greens. These foods can help support healthy potassium levels as part of a balanced diet.
However, some people with diabetes also have kidney disease, which can affect how the body regulates potassium. In these cases, a healthcare provider may recommend limiting certain high-potassium foods.
5. Fiber
Fiber is not a vitamin or mineral, but many people with diabetes do not get enough of it. Fiber slows digestion and helps reduce rapid rises in blood sugar after meals. It also supports heart health and digestive health.
Foods high in fiber include beans, lentils, vegetables, fruits, nuts, seeds, and whole grains. Soluble fiber, found in foods like oats and beans, is especially helpful because it forms a gel-like texture in the digestive tract that slows how quickly carbohydrates are absorbed.
Increasing fiber intake too quickly can sometimes cause bloating, gas, or digestive discomfort. Gradually adding more fiber and drinking enough water can help the digestive system adjust more comfortably.
6. Chromium
Chromium is a trace mineral involved in insulin function and carbohydrate metabolism. Some research suggests people with diabetes may have lower chromium levels, though experts are still studying whether taking supplements improves blood sugar control.
Deficiency is uncommon overall, but not getting enough chromium may affect how the body responds to insulin.
Food sources of chromium include broccoli, whole grains, green beans, turkey, potatoes, and beef. While chromium is widely available in foods, high-dose supplements are sometimes used in research settings. Because these supplements may interact with certain medications, it is important to speak with a healthcare provider before using them.
7. Omega-3 Fatty Acids
Omega-3 fatty acids help support heart health and reduce inflammation. This is especially important because people with diabetes have a higher risk of heart disease.
Many people do not regularly eat enough omega-3-rich foods. Fatty fish such as salmon, sardines, trout, and mackerel are among the best sources. Plant foods like walnuts, chia seeds, and flaxseeds also provide omega-3 fats, though in a different form.
Including omega-3-rich foods in your diet a few times each week may help support overall health as part of a balanced eating pattern.
What This Means for Your Health
Nutrient deficiencies do not always cause obvious symptoms right away, but over time, they can affect energy levels, nerve health, digestion, and overall well-being.
For people with diabetes, eating a variety of nutrient-rich foods regularly may help support both blood sugar management and long-term health. In some cases, healthcare providers may recommend bloodwork or supplements to address specific deficiencies or nutrient losses related to certain medications.
