Why home environment matters for Hypertension
Cold homes raise blood pressure through cold-induced vasoconstriction; the effect is measurable within minutes of exposure to indoor temperatures below 18°C and persists through the cold exposure. Long-term cold-home exposure is associated with sustained blood-pressure elevation and increased cardiovascular event rate. Indoor air pollution (PM2.5, NO2) is independently linked to blood-pressure elevation in epidemiological studies. Stress, sleep disturbance from noise or cold, and fuel poverty all compound the picture.
UK prevalence: Approximately 1 in 4 UK adults (around 14 million people) have hypertension, with diagnosis rates rising over the past decade due to better screening. NICE recognises hypertension as a leading modifiable risk factor for cardiovascular and renal disease.