Letters Too much medicine Beware the influence of the “SIF” (single issue fanatic) in clinical guidelines BMJ 2013; 347 doi: https://doi.org/10.1136/bmj.f4719 (Published 30 July 2013) Cite this as: BMJ 2013;347:f4719 Article Related content Metrics Responses Peer review Related articles Editorial Too much medicine; too little care Published: 02 July 2013; BMJ 347 doi:10.1136/bmj.f4247 See more Patients with asthma or heart disease should avoid incense sticks and other airborne pollutants, says CMO BMJ June 03, 2025, 389 r1146; DOI: https://doi.org/10.1136/bmj.r1146 Why are UK cardiovascular deaths in under 65s rising again? BMJ May 19, 2025, 389 r1015; DOI: https://doi.org/10.1136/bmj.r1015 Prescribing parkrun: medicalising a walk in the park BMJ April 08, 2025, 389 r670; DOI: https://doi.org/10.1136/bmj.r670 GPs can prescribe tirzepatide to priority patient groups from June BMJ April 02, 2025, 389 r665; DOI: https://doi.org/10.1136/bmj.r665 Exercise referral rates for patients with risk of cardiovascular disease vary widely across England, study reports BMJ February 12, 2025, 388 r287; DOI: https://doi.org/10.1136/bmj.r287