<s>[INST] Why does eating less salt help medicines to work? [/INST] Eating less salt can help ACE inhibitors and angiotensin receptor blocker (ARBs) to work better. These medicines block a hormonal system called the renin-angiotensin system which is important in blood pressure control, and blocking it helps to lower blood pressure.The renin-angiotensin system tends to be more important in younger people and those with lower salt intake, and eating less salt helps these medicines to work better.If you are older or from African or Caribbean backgrounds you wouldn’t normally be given ACE inhibitors and angiotensin receptor blocker (ARBs) as a first choice, but lowering your salt intake could mean they work just as well as the drugs which are normally used – calcium-channel blockers or thiazide diuretics. Source: Blood Pressure UK. Link: https://www.bloodpressureuk.org/resources/frequently-asked-questions/#d.en.819877. Field: Cardiovascular. Disease: Hypertension </s>