Blood Sugar News and Research

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Blood sugar concentration, or glucose level, refers to the amount of glucose present in the blood of a human or animal. Normally, in mammals the blood glucose level is maintained at a reference range between about 3.6 and 5.8 mM (mmol/l). It is tightly regulated as a part of metabolic homeostasis.

Researchers show red blood cells drive better glucose tolerance at high altitude

Chronic hypoxia improves glucose tolerance in mice through insulin-independent mechanisms, with red blood cells acting as a major systemic glucose sink. Increased erythrocyte production and altered glycolytic flux help reduce circulating glucose while supporting oxygen delivery to tissues.

22 Feb 2026

Low oxygen turns red blood cells into powerful glucose sinks

Scientists have long known that people living at high altitudes, where oxygen levels are low, have lower rates of diabetes than people living closer to sea level.

19 Feb 2026

Hypoxia rewires red blood cells to clear excess glucose

In a 2023 paper on hypoxia and glucose metabolism, our lab showed how organisms rewire their metabolism to adapt to low oxygen levels-such as those found at high altitudes.

19 Feb 2026

Monthly produce prescriptions do not improve blood sugar

Findings from a study on produce prescriptions show no significant improvement in blood sugar control, emphasizing the importance of addressing food insecurity.

19 Feb 2026

Undiagnosed diabetes and kidney disease raise heart risk

Diabetes and kidney disease are major risk factors for heart disease, yet many cases are undiagnosed. In addition, a consumer survey done last fall suggests that most people don't realize that their heart, kidney and metabolic health (how the body creates, uses and stores energy) are connected.

18 Feb 2026

Exercise-induced activation of neurons mediates improvements in endurance

Exercise does more than strengthen muscles; it also rewires the brain. In a study publishing February 12 in the Cell Press journal Neuron, researchers reveal that the lasting gain in endurance from repeated exercise-such as the ability to run farther and faster over time-involves changes in brain activity that help muscles and hearts to become stronger.

13 Feb 2026

Magnesium lower fasting blood sugar in older adults

Magnesium boosts fasting glucose control in older adults with deficiency, but preventing diabetes progression may need more than just mineral correction.

13 Feb 2026

Boosting good immune cells can help fight insulin resistance and diabetes

Scientists at the University of Pittsburgh School of Medicine discovered a surprising new way the body can fight insulin resistance and diabetes – by boosting a special type of "good" immune cell in fat tissue.

12 Feb 2026

Aligning overnight fasting with sleep improves heart health

A new Northwestern Medicine study has personalized overnight fasting by aligning it with individuals' circadian sleep-wake rhythm - an important regulator of cardiovascular and metabolic function - without changing their caloric intake.

12 Feb 2026

Weight loss drug tirzepatide may lower the risk of diabetic retinopathy

The popular diabetes and weight loss medication tirzepatide (brand name Mounjaro or Zepbound) may lower the risk of diabetic retinopathy, a leading cause of vision loss, according to Weill Cornell Medicine investigators.

11 Feb 2026

South Asian adults in the U.S. have higher prevalence of risk factors for heart disease

South Asian adults in the U.S. report doing many of the right things for heart health, yet they show significantly higher rates of prediabetes, diabetes and hypertension than white and Chinese adults, and higher than or roughly similar rates to Black and Hispanic patients, according to a new study led by Northwestern Medicine.

11 Feb 2026

High-fat diets cause more damage to metabolic health than carbohydrates

In recent years, many media reports and social media influencers have emphasized the dangers of eating too many carbohydrates.

10 Feb 2026

Stress hormones rewire immune system during periods of food scarcity

When food is scarce, stress hormones direct the immune system to operate in "low power" mode to preserve immune function while conserving energy, according to researchers at Weill Cornell Medicine.

10 Feb 2026

Cognitive speed training shows potential to delay dementia for two decades

Adults age 65 and older who completed five to six weeks of cognitive speed training - in this case, speed of processing training, which helps people quickly find visual information on a computer screen and handle increasingly complex tasks in a shorter time period - and who had follow-up sessions about one to three years later were less likely to be diagnosed with dementia, including Alzheimer's disease, up to two decades later, according to new findings published today in Alzheimer's & Dementia: Translational Research and Clinical Interventions.

9 Feb 2026

Large trials show statins rarely cause reported side effects

Cardiovascular disease results in around 20 million deaths worldwide and causes around a quarter of all deaths in the UK.

5 Feb 2026

Implantable immune scaffold predicts type 1 diabetes weeks before symptoms

The study highlights a presymptomatic phase in type 1 diabetes progression, using immune niches to track immune changes before blood sugar abnormalities.

4 Feb 2026

Financial incentives improve glycemic control in low-income diabetes patients

A new study examined whether providing financial vouchers to offset medication costs, conditional on improved blood sugar levels, could enhance glycemic control.

3 Feb 2026

A common diabetes drug may prevent long COVID when taken early

Research supports metformin's efficacy in reducing long COVID symptoms, suggesting its use in acute COVID-19 cases could alleviate long-term health impacts.

3 Feb 2026

Cardiologists highlight overlooked heart risks across women’s lives

Heart disease remains the leading cause of death for women in the United States, yet awareness of cardiovascular risk—particularly among younger women and women of color—has stalled, even as rates of high blood pressure, diabetes, obesity, and high cholesterol continue to rise.

3 Feb 2026

Umbilical cord blood markers may predict future type 1 diabetes

One day, there could be a new test to screen for type 1 diabetes, now that scientists have found markers in the blood of the umbilical cords of children who were later diagnosed with the disease.

29 Jan 2026