BBC Morning Live's Dr Ranj Singh has issued a warning for heart attack patients taking beta blockers, following new research that challenges 40 years of medical thinking. The study suggests that patients who have had minor heart attacks may not need the medication long-term, and could face higher risks of mortality.
Study Questions Routine Use of Beta Blockers
Dr Ranj Singh told BBC Morning Live that the latest findings indicate that individuals taking beta blockers after uncomplicated heart attacks may not benefit from lifelong use. The research, which involved over 8,500 patients in Spain and Italy, has questioned the routine prescription of these drugs.
Presenter Helen Skelton noted that more than 50 million prescriptions for beta blockers are issued annually in the UK. Dr Ranj explained that beta blockers work by blocking the effects of adrenaline and noradrenaline, slowing the heart rate and reducing blood pressure. However, the new evidence suggests they may not be universally helpful.
Side Effects and Risks
Dr Ranj highlighted significant side effects, including tiredness, fatigue, dizziness, cold hands and feet, sleep disturbances, and sexual dysfunction. He also noted that a subgroup analysis found women on beta blockers had a slightly higher risk of death long-term, though he urged caution as subgroup analyses are notoriously unreliable.
He emphasised that patients should not stop taking beta blockers abruptly, as this can cause a rebound effect with increased heart rate, blood pressure, palpitations, and chest pain. Instead, they should consult their GP to gradually reduce the dose.
Changing Guidelines
Dr Ranj stated that guidelines are starting to shift based on the evidence. Instead of prescribing beta blockers to everyone after a heart attack, doctors are now starting them and reviewing after a year to target those who will benefit most.
He concluded that more research is needed, particularly regarding the risks for women, before drawing firm conclusions.
