Stopping Aspirin Intake Raises Risks of Heart Attack

Doctors commonly prescribe daily low-dose aspirin after a heart attack to reduce the risk of having a second cardiovascular event. (Reuters)
Doctors commonly prescribe daily low-dose aspirin after a heart attack to reduce the risk of having a second cardiovascular event. (Reuters)
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Stopping Aspirin Intake Raises Risks of Heart Attack

Doctors commonly prescribe daily low-dose aspirin after a heart attack to reduce the risk of having a second cardiovascular event. (Reuters)
Doctors commonly prescribe daily low-dose aspirin after a heart attack to reduce the risk of having a second cardiovascular event. (Reuters)

Doctors commonly prescribe daily low-dose aspirin after a heart attack to reduce the risk of having a second cardiovascular event.

About one in six patients however stop taking their aspirin within three years, a Swedish study found. It warned against stopping the low dose of aspirin, because it raises the risk of heart attack or stroke by nearly 40 percent.

Lead author of the study Dr. Johan Sundstrom told Reuters Health that low-dose aspirin makes the platelets in the blood less likely to form clots. This is especially useful in the coronary or carotid arteries, where blood clots may lead to myocardial infarctions and strokes.

Sundstrom, an epidemiologist at Uppsala University added that millions of patients worldwide take aspirin on a daily basis and might consider stopping at some time during their life.

“We performed this study to help physicians and patients to make an informed decision whether or not to stop aspirin use,” he explained.

To see if risk rises after a patient stops aspirin therapy, Sundstrom’s team used nationwide medical and death registries to identify patients over age 40 taking low-dose aspirin. In Sweden, low-dose aspirin is available only by prescription, so the researchers were also able to see who continued filling their prescriptions between 2005 and 2009.

The researchers analyzed records for 601,527 patients, who were cancer-free and had taken at least 80 percent of their prescribed aspirin doses during the first year of treatment. After excluding a small proportion of patients whose medical records showed a reason for stopping aspirin, such as surgery or a case of severe bleeding, they found that about 15 percent of the full group had stopped taking their aspirin after about three years.

At the end of the study period, there were a total of 62,690 cardiovascular events, defined as hospitalization for a heart attack or stroke, or cardiovascular death.

The study lead author said patients who discontinued aspirin had a 37 percent higher rate of cardiovascular events than those who continued. That translates to one extra cardiovascular event each year among every 74 patients who stopped taking aspirin.

The risk increased shortly after discontinuation, and did not appear to diminish over time, he added.

“Adherence to low-dose aspirin treatment in the absence of major surgery or bleeding is likely an important treatment goal,” stressed Sundstrom.



India’s Monsoon Back on Track, Heatwave to Ease, Says Weather Officials 

School children use umbrellas to cover themselves from the rain as they walk to school, in New Delhi, India May 2, 2025. (Reuters)
School children use umbrellas to cover themselves from the rain as they walk to school, in New Delhi, India May 2, 2025. (Reuters)
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India’s Monsoon Back on Track, Heatwave to Ease, Says Weather Officials 

School children use umbrellas to cover themselves from the rain as they walk to school, in New Delhi, India May 2, 2025. (Reuters)
School children use umbrellas to cover themselves from the rain as they walk to school, in New Delhi, India May 2, 2025. (Reuters)

India's monsoon has revived after stalling for more than a fortnight, and rains are set to cover central parts of the country this week, bringing relief from the heatwave in the grain-growing northern plains, two senior weather officials said on Monday.

The monsoon, the lifeblood of the country's nearly $4 trillion economy, delivers nearly 70% of the rain that India needs to water farms and replenish aquifers and reservoirs.

Nearly half of India's farmland, which has no irrigation, depends on the annual June-September rains for crop growth.

The monsoon has revived after a fortnight as a favorable weather system has developed in the Bay of Bengal, which would help the monsoon to cover entire central India this week, an official of the India Meteorological Department (IMD) told Reuters.

Monsoon rains on Monday covered almost the entire western state of Maharashtra and entered into neighboring Gujarat and central state of Madhya Pradesh, the official said.

The Monsoon's onset over Kerala occurred on May 24 and quickly covered southern, northeastern and some parts of western India ahead of its usual schedule, but its progress has stalled since May 29, according to an IMD chart that tracked the monsoon's progress.

The monsoon has gained the required momentum, and heavy rainfall is likely over west coast, central and some parts of north India in next ten days, which will significantly bring down temperatures, another weather official said.

India has received 31% lower rainfall than average in the first half of June, but in the second half the country is set to receive above average rainfall, the official said.

Monsoon rains are set to progress quickly in the next few days and could cover most parts of the country before the end of June, the official said.

Summer rains usually fall in Kerala around June 1 before spreading nationwide by mid-July, allowing farmers to plant crops such as rice, corn, cotton, soybeans and sugarcane.