A BBC doctor has spoken out after a recent study issued a warning to some heart attack patients taking beta blockers, indicating a higher risk of death in the long term. Dr Ranj Singh stated that the new research suggests people who have had mild heart attacks might not need the medication.
Beta Blockers: Common but Questioned
Speaking on BBC Morning Live, Dr Ranj explained that beta blockers are prescribed over 50 million times annually in the UK. They are used for conditions such as heart attacks, heart failure, heart valve disease, irregular heart rhythms, angina, and high blood pressure. However, they are no longer the first-line treatment for uncomplicated high blood pressure.
Host Helen Skelton asked: “More than 50 million prescriptions are issued in the UK every year for beta blockers. They are incredibly common. New research though claims it could challenge 40 years of thinking about how effective these tablets really are. Dr Ranj, what is this study going to mean to people?”
How Beta Blockers Work
Dr Ranj explained: “They work by blocking the effects of hormones adrenaline and noradrenaline, the stress or fight-or-flight hormones. They block beta receptors found throughout the body, including the heart, blood vessels, lungs, and pancreas. They calm things down, reducing heart rate, blood pressure, and the heart's workload and oxygen requirement.”
New Research Challenges Long-Standing Practice
Traditionally, beta blockers have been routinely given after a heart attack to aid recovery. However, a recent study involving over 8,500 patients in Spain and Italy, along with other studies, has questioned this approach. Dr Ranj stated: “The bottom line is that if you’ve had an uncomplicated heart attack and your heart function is still relatively well preserved, then you may not benefit from a lifelong beta blocker afterwards. That thinking is changing.”
Guidelines are starting to shift. Instead of giving beta blockers to everyone, doctors now start them and review after a year to target those who will benefit most.
Side Effects and Risks
Side effects are a major reason people may want to stop beta blockers. Dr Ranj noted: “The big one is tiredness and fatigue. Many people report their energy levels slump. Other side effects include dizziness, cold hands and feet, sleep disturbance, and sexual dysfunction like erectile dysfunction in men.”
He also highlighted a subgroup analysis that found women on beta blockers had a slightly higher risk of death long term. However, he cautioned: “Subgroup analyses are notoriously unreliable. More research is needed before drawing firm conclusions.”
Warning: Do Not Stop Suddenly
Dr Ranj warned against abruptly stopping beta blockers: “You can have a rebound effect where your body becomes very sensitive to adrenaline. Your heart rate and blood pressure might shoot up, and you may get palpitations and chest pain. Discuss with a healthcare professional or your GP, as you will likely need to taper off gradually.”
