Comorbidities of Diabetes and Hypertension

Diabetes and hypertension frequently coexist, forming a bidirectional relationship that amplifies cardiovascular and renal risk well beyond that seen with either condition alone. Shared pathophysiological mechanisms include insulin resistance, endothelial dysfunction and chronic low-grade inflammation. Hyperglycaemia promotes oxidative stress and the formation of advanced glycation end products, while elevated arterial pressure drives vascular remodelling and microvascular rarefaction. Activation of the renin–angiotensin–aldosterone system further links glycaemic dysregulation to vasoconstriction, sodium retention and myocardial fibrosis. Clinically, patients with both disorders are at sharply increased risk of coronary artery disease, stroke, heart failure and progression of nephropathy. Epidemiological studies indicate that hypertension is twice as common among people with type 2 diabetes than in those without, and the coexistence of both conditions accelerates end-organ damage. Effective management therefore hinges on integrated therapeutic strategies targeting glycaemic control, blood pressure reduction and lifestyle modification to interrupt overlapping mechanisms of injury.

Research from Nature Portfolio

A long-term cohort study of older adults evaluated the joint impact of diabetes and hypertension on cardiovascular outcomes and mortality over nearly 14 years. Participants categorised with both conditions experienced a substantially higher incidence of coronary heart disease and stroke events, and a more than twofold increase in all-cause and cardiovascular mortality, compared with those carrying only one diagnosis. Notably, the adverse effects were more pronounced in men than in women. These findings underscore the importance of aggressive risk-factor management once comorbidity is established and highlight demographic variations in prognosis.

Comorbidities of Diabetes and Hypertension publication trend

The graph below shows the total number of articles in comorbidities of diabetes and hypertension across all publications each year (not limited to Nature Index journals).

Technical terms

Comorbidity: The simultaneous presence of two or more chronic conditions in a patient.

Insulin resistance: A reduced response of tissues to insulin, leading to impaired glucose uptake and hyperglycaemia.

Endothelial dysfunction: Impairment of the inner lining of blood vessels, hindering vasodilation and promoting inflammation.

Renin–angiotensin–aldosterone system (RAAS): A hormonal cascade regulating blood pressure and fluid balance; overactivation contributes to hypertension and fibrosis.

Microvascular complications: Damage to small blood vessels, manifesting as retinopathy, nephropathy or neuropathy.

Macrovascular complications: Atherosclerotic damage to large vessels, leading to coronary artery disease, stroke or peripheral arterial disease.

References

1. Diabetic Vasculopathy: Molecular Mechanisms and Clinical Insights. International Journal of Molecular Sciences (2024).
2. The 14-year cumulative genetic high blood pressure and risk of type 2 diabetes in Korean: observational and Mendelian randomization evidence. Hypertension Research (2025).
3. The interaction between general or abdominal obesity and hypertension on the risk of type 2 diabetes mellitus: a cross-sectional analysis in Iranian adults from the RaNCD cohort study. BMC Public Health (2024).
4. Impact Of Hypertension versus Diabetes on Cardiovascular and All-cause Mortality in Iranian Older Adults: Results of 14 Years of Follow-up. Scientific Reports (2017).