Blood Clot News and Research

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A Blood Clot is a mass of blood that forms when blood platelets, proteins, and cells stick together. When a blood clot is attached to the wall of a blood vessel, it is called a thrombus. When it moves through the bloodstream and blocks the flow of blood in another part of the body, it is called an embolus.

Long-term study supports cardiovascular safety of contemporary hormone replacement therapy

Contemporary hormone replacement therapy (HRT) was not associated with an increased risk for heart attack, stroke, blood clots or death among women ages 45 to 59, according to a large, long-term study of over 52,000 women in Israel.

2 Nov 2026

Researchers investigate if drug for leg cramps can prevent a second stroke

A second ischemic stroke, the most common stroke type, is associated with double the risk of death and triple the risk of long-term disability.

29 Oct 2026

Michigan Medicine study reveals how diabetes drug reduces stroke risk

For millions living with type 2 diabetes, heart disease remains one of the greatest threats to their health.

28 Oct 2026

Study links recreational cannabis legalization to rising heart attack admissions

Legalization of recreational cannabis in the US is associated with a rise in hospital admissions for cardiovascular disease, finds an analysis of more than 50 million patient discharge records, published in the open access journal BMJ Open.

22 Oct 2026

Half-matched bone marrow transplants show high survival in young aplastic anemia patients

Researchers at the Johns Hopkins Sidney Kimmel Comprehensive Cancer Center and Johns Hopkins Children's Center report that bone marrow transplant using half-matched family donors achieved a 96% survival rate among children, adolescent, and young adult patients with severe aplastic anemia, a rare, life-threatening disorder in which the bone marrow fails to produce enough healthy blood cells.

22 Oct 2026

Newer anticoagulants linked to fewer strokes and deaths after brain bleeds

For people with atrial fibrillation (AFib), an irregular heartbeat, and intracranial hemorrhage, a type of stroke also known as a brain bleed, anticoagulant use was associated with a lower risk of an ischemic stroke and death, according to a new study published October 21, 2026, in Neurology®, the official medical journal of the American Academy of Neurology.

21 Oct 2026

Early heart rhythm control linked to fewer recurrent strokes

For people hospitalized with ischemic stroke and atrial fibrillation (AFib), restoring the heart's normal rhythm within eight weeks after stroke is associated with a lower risk of having another stroke, according to a new study published October 21, 2026, in Neurology®, the official medical journal of the American Academy of Neurology.

21 Oct 2026

Coffee drinkers had fewer repeat blood clots in a Norwegian study

A Norwegian study involving 2,071 patients found that those who reported drinking 1 to 2 cups of coffee daily before their first venous thromboembolism had a 51% lower estimated risk of recurrence than non-drinkers. The association was strongest among patients whose initial blood clot was provoked, although the observational study could not establish that coffee consumption prevents recurrence.

14 Oct 2026

Study finds oral hormone replacement therapy increases venous thromboembolism risk

Current use of oral menopausal hormone therapy (commonly known as hormone replacement therapy or HRT) is associated with an increased risk of blood clots in legs / lungs regardless of dose or treatment duration, finds a large Danish study published by The BMJ today.

23 Sep 2026

Study reveals why many patients fail to recover after stroke

A clot forms. Blood flow to the brain is blocked. Starved of oxygen, neurons begin to die.

2 Sep 2026

Catheter-directed thrombolysis improves short-term outcomes in pulmonary embolism patients

In patients with intermediate−high risk pulmonary embolism, catheter-directed thrombolysis improved short-term clinical outcomes compared with standard anticoagulation therapy alone, according to results presented in a Hot Line session today at ESC Congress 2026.

31 Aug 2026

New findings do not support the use of edoxaban in AF patients after intracranial hemorrhage

Edoxaban did not reduce stroke or systemic embolism but increased major bleeding in high-risk patients with atrial fibrillation who had had an intracranial hemorrhage, according to results presented in a Hot Line session today at ESC Congress 2026.

29 Aug 2026

New stroke guideline mandates personalized and early rehabilitation

A stroke can change life in an instant, affecting everything from walking and speaking to memory, mood and the ability to perform everyday tasks.

27 Aug 2026

Multiple long-term conditions raise pregnancy risks, study finds

Women who begin pregnancy with two or more pre-existing, long-term physical or mental health conditions have 20% higher risk of miscarriage, 69% higher risk of severe nausea and vomiting, and around four times the risk of anxiety and depression, compared with those with no long-term conditions.

18 Aug 2026

Stretchable catheter could help identify high-risk arterial plaque

We all know about plaque from dreaded trips to the dentist. But plaque can also build up inside the arteries, taking the form of fatty deposits that can potentially restrict blood flow.

11 Aug 2026

Researchers develop artery-on-a-chip platform to predict stroke risk

Predicting an individual's risk of ischemic stroke is difficult because thrombosis embolization-the process of a blood clot detaching from the area where it formed and traveling to and then sticking in another blood vessel-is based on factors that are unique to each person.

23 Jul 2026

Engineered blood clots form faster to stop severe bleeding

Blood clotting is one of the body's oldest survival mechanisms-a biological defense that has protected humans from dangerous bleeding for millions of years.

15 Jun 2026

GLP-1 therapies linked to fewer complications in adults with both obesity and autoimmune disease

Among adults with both obesity and an autoimmune disease, those taking a glucagon-like peptide-receptor 1 agonist (GLP-1RA) medication had lower rates of emergency department visits and were less likely to experience serious cardiac events, such as stroke, pulmonary embolism or death when compared to similar adults who were not taking these medications, according to new research published today in the Journal of the American Heart Association, an open-access, peer-reviewed journal of the American Heart Association.

7 Jun 2026

New PET radiotracer shows high accuracy for detecting clots in the legs and lungs

A novel PET radiotracer can accurately detect deep vein thrombosis in the legs and reveal whether clots have migrated to the lungs.

1 Jun 2026

Study reveals how immune cells alter vascular plaque formation

A new LMU study shows how differently immune cells influence the formation of dangerous vascular deposits - and identifies miR-147 as a potential starting point for future therapies.

27 May 2026