Health
5 Times When Women are More at Risk of Blood Clots
Thrombosis, or blood clotting, can affect people of all ages, races, and genders. And while both men and women are at risk of getting a blood clot, there are several stages in a woman’s life when that risk may be higher.
Thrombosis is the formation of blood clots in the circulatory system, which can be dangerous if the clot blocks blood flow to vital organs, causing serious complications, such as deep vein thrombosis (DVT) or pulmonary embolism (PE).
According to the World Thrombosis Day (WTD) campaign, blood clots can happen to anyone at any time. Surgery, hospitalisation, and cancer raise the risk for everyone, but certain ages and factors in a woman’s life increase the possibility of getting a thrombosis.
Pregnancy
In general, women may be at a slightly higher risk of developing thrombosis during pregnancy and shortly after delivery. A woman’s body undergoes significant hormonal changes when she is pregnant, says Dr Helen Okoye, a leading Nigerian thrombosis specialist who is part of the World Thrombosis Day (WTD) steering committee.
“A pregnant woman’s blood becomes more prone to clotting to prevent excessive bleeding during childbirth, which places her at an increased risk of a DVT and PE. The risk of thrombosis remains elevated for a few weeks after childbirth. During this time, the body slowly returns to its pre-pregnancy state, and the risk of clotting decreases gradually,” explains Dr Okoye.
Hormonal contraceptives
Some forms of hormonal contraceptives, particularly those containing estrogen, can also increase the risk of blood clot formation, although the risk is generally considered low. Women who use combined oral contraceptives (containing both estrogen and progestin) or hormone-releasing intrauterine devices (IUDs) may be at a slightly higher risk of thrombosis.
Hormone replacement therapy
Hormone replacement therapy (HRT) involves taking hormones to alleviate menopausal symptoms and manage hormonal imbalances. Women undergoing HRT may have an increased risk of thrombosis, particularly if the therapy includes estrogen, says Dr Okoye. “Although the risk of thrombosis with HRT is generally low, it is higher than in women who are not taking hormone therapy. The risk may also be more for women who have additional risk factors, such as a personal or family history of blood clots, obesity, or a sedentary lifestyle. If you are using or considering HRT, discuss the potential risks with your healthcare provider,” advises Dr Okoye.
Medical conditions
Certain medical conditions, such as obesity and some inherited blood clotting disorders, can elevate the risk of thrombosis in women. Conditions that affect hormone levels, like polycystic ovary syndrome (PCOS), can also contribute to an increased risk of thrombosis, and some autoimmune disorders, such as systemic lupus erythematosus (SLE), which is much more common in women, can lead to an increased risk of blood clotting. Additionally, women with specific types of cancer may have a higher probability of getting a thrombosis.
Strokes
If a blood clot obstructs the flow of blood to a part of the brain, it can cause a stroke, the severity of which depends on the size and location of the blocked blood vessel.
Women have some differences in stroke risk compared to men, points out Dr Okoye. Stroke is more common in women than in men, with a 1 in 4 risk of stroke for women after age 25. Stroke is also the fifth leading cause of death for women, according to the Centers for Disease Control and Prevention (CDC).
Women, like men, can experience strokes at any age, but there are certain life stages and factors that can increase the risk of stroke in women. “Women tend to live longer than men on average, and stroke risk increases with age. Since stroke is more common in older individuals, the longer life expectancy of women contributes to their higher overall stroke incidence,” explains Dr Okoye.
Pregnant women, especially those with certain conditions like preeclampsia, gestational diabetes, or clotting disorders, may also have an increased risk of stroke.
The weeks following childbirth can also be a time of increased stroke risk for some women, particularly if they experienced complications during pregnancy or delivery.
Women who experience migraines with aura may also have a higher risk of stroke, especially if they have other risk factors such as smoking or using oral contraceptives. Atrial fibrillation is another red flag.
“This heart rhythm disorder is more common in women and significantly increases the risk of stroke due to the potential for blood clots forming in the heart and traveling to the brain. Hypertension is also a significant risk factor for stroke, and it can affect women at any age,” says Dr Okoye.
Lessen the risk
It is important to note that each woman’s risk of stroke or thrombosis is influenced by a combination of factors, including genetics, lifestyle, and medical history.
“Women need to be aware of their own personal risk factors and manage any existing health conditions they may have,” advises Dr Okoye. “If you’re concerned at all, consult a healthcare professional for personalised advice and risk assessment. Regular medical check-ups, adherence to prescribed medications, and a healthy lifestyle are all ways to reduce your risk of thrombosis,” she says.
“Strive to maintain a healthy weight. Being overweight or obese can increase the risk of blood clots, so follow a balanced diet that is rich in fruits, vegetables, whole grains, lean proteins, and healthy fats,” advises Dr Okoye. “If you smoke, stop as soon as possible. Smoking damages blood vessels and increases the risk of blood clots. And drink lots of water to keep your body well-hydrated, which can help prevent blood from thickening and forming clots.”
Staying active is crucial, too. According to the WTD campaign, regular physical activity helps improve blood circulation and reduces the risk of blood clots. WTD campaign’s 2023 theme is “Move Against Thrombosis”, and they advise people to incorporate exercise or regular movement into their everyday routine.
It’s important for women to be aware of all the above risk factors and what they can do about it, concludes Dr Okoye. “If you have questions about your risk of thrombosis, it’s essential to speak with your healthcare provider. They can assess your individual risk factors and provide appropriate guidance and preventive measures if needed.”
Finally, familiarise yourself with the signs and symptoms of blood clots, such as swelling, pain, tenderness, warmth, and redness in the affected area. If you suspect a blood clot, seek immediate medical attention.
Health
Over 1.5 million Nigerian Children Living With Sickle Cell Disease—Report
By Modupe Gbadeyanka
More than 1.5 million children under the age of 15 are living with sickle cell disease in Nigeria, a new international study published in The Lancet Child & Adolescent Health, one of the world’s leading medical journals, has revealed.
In the report made available to Business Post, it was disclosed that Nigeria carries the highest burden of disease globally, far exceeding other high-burden countries such as the Democratic Republic of the Congo and Ethiopia.
The findings highlight both the scale of the challenge in Nigeria and the opportunity for the country to lead Africa in tackling one of the most preventable causes of childhood illness and death.
The study shows that nearly nine million children across sub-Saharan Africa are living with sickle cell disease in 2023, including around 1.17 million infants and 2.75 million children under five, who face the highest risk of early death without treatment.
Sickle cell disease is an inherited blood disorder present at birth. With early diagnosis and access to simple, low-cost interventions such as newborn screening, penicillin prophylaxis, routine vaccinations, malaria prevention, and hydroxyurea, most complications and deaths can be prevented.
However, in Nigeria, access to these essential services remains limited. Many children are only diagnosed after severe and avoidable complications, while others are never diagnosed at all, contributing to high levels of preventable illness and early childhood deaths.
The researchers emphasise that strengthening Nigeria’s health system response will be critical. This includes expanding newborn screening programmes, improving access to essential medicines, and integrating sickle cell care into primary healthcare services.
They called for urgent and coordinated action across government, health institutions, and development partners, including expanding newborn screening programmes, improving access to essential medicines and vaccines, and embedding sickle cell care within primary healthcare services.
The researchers, led by Professor Davies Adeloye, Professor of Public Health at Teesside University, United Kingdom, and Director of the International Society of Global Health (ISoGH), also called for increased domestic investment, supported by international partnerships, as well as stronger data systems to improve surveillance and guide policy decisions.
They concluded that even modest improvements in early-life screening and treatment in high-burden countries like Nigeria could transform child survival and significantly reduce preventable deaths.
“Nigeria now stands at the centre of the global sickle cell crisis. With over 1.5 million children affected, the scale is enormous, but so is the opportunity to act. We already know what works. Newborn screening and early treatment are effective, affordable, and can be delivered through existing health systems.
“If Nigeria prioritises sickle cell disease within its national health agenda and integrates care into routine maternal and child health services, we could save hundreds of thousands of young lives and significantly reduce avoidable deaths.” Professor Adeloye noted.
It was learned that the study analysed data from 40 studies across 22 African countries to produce the most comprehensive country-level estimates of childhood sickle cell disease to date.
Health
Helical Secures $10m Funding Package for Expansion
By Dipo Olowookere
A $10 million capital has been raised by Helical to support expansion across more top-20 pharma programmes and growth of its deployed science engineering team.
The firm will also use the money to build the compounding evidence layer that improves performance across diseases, as its mission is to make every scientist able to test hypotheses at the speed of inference and to turn in-silico discovery into a reliable engine for R&D throughput.
The funding package was from redalpine, Gradient, BoxGroup, Frst and notable angels, including Aidan Gomez (CEO Cohere), Clement Delangue (CEO HuggingFace) and Mario Goetze (pro soccer player).
Helical has a product known as the virtual AI lab for pharma, an application layer that turns biological foundation models into decision-ready, reproducible in-silico discovery workflows.
The platform has two product surfaces — the Virtual Lab for biologists and translational scientists, and the Model Factory for ML engineers and data scientists — built on the same data, the same models, and the same results.
By putting both sides in the same system, Helical closes the gap between computational predictions and biological decision-making, so teams that traditionally worked in silos can collaborate on the same evidence.
Helical was founded in early 2024. It was created by three school friends who took different paths to the same problem.
Rick Schneider built tech at Amazon and later helped the German enterprise Celonis scale in France and Japan. Maxime Allard led data science teams at IBM before pursuing a PhD focused on reinforcement learning and robotics. Mathieu Klop became a cardiologist and genomics researcher.
When bio foundation models emerged, the trio saw the chance to build the missing application layer that would let pharma teams move from model experimentation to reproducible, production discovery.
“The models alone don’t discover drugs. The system does. Pharma teams need a system that turns foundation models into workflows scientists can run, validate, and defend.
“We built Helical to make in-silico science reproducible at pharma scale, so teams can go from hypothesis to decision in days instead of months,” the co-founder of Helical, Mr Rick Schneider, said.
“We are at a unique point in time where biological foundation models and general language reasoning models are converging.
“We backed Helical because we strongly believe they have what it takes to build the pharma AI orchestration platform that will drive this transition from siloed AI models to integrated virtual AI labs,” the General Partner at redalpine, Mr Daniel Graf, stated.
Health
NARD Suspends Indefinite Strike, Gives FG Fresh Two-Week Ultimatum
By Adedapo Adesanya
The Nigerian Association of Resident Doctors (NARD) has suspended its planned nationwide indefinite strike, granting the federal government a two-week ultimatum to address lingering welfare issues affecting resident doctors across the country.
The decision was taken after an emergency meeting of the association’s National Executive Council on Tuesday, where members reviewed assurances from government representatives and resolved to give dialogue another chance.
NARD said the suspension was informed by “progress made” in negotiations, particularly commitments on the prompt payment of salary arrears, hazard allowances, and steps toward resolving issues surrounding the Medical Residency Training Fund.
The association did not declare a full resolution of the dispute. It noted that the government had shown “renewed willingness” to address the concerns that triggered the strike threat.
The association noted that while these engagements signalled a willingness by the government to resolve the dispute, several critical issues remain outstanding, particularly the delayed payment of promotion arrears, salary arrears, the 2026 Medical Residency Training Fund (MRTF), and the backlog of 19 months’ professional allowance arrears owed to resident doctors.
It also expressed concern over the Federal Government’s decision to halt the implementation of the reviewed PAT, which had earlier triggered widespread dissatisfaction among its members and raised fears of disruption to healthcare services nationwide.
Despite these unresolved issues, NARD said it opted to suspend the strike as a demonstration of goodwill and commitment to ongoing dialogue, while giving the government a two-week window to take concrete, measurable and verifiable steps to meet its demands.
The association insisted on the immediate reversal of the decision affecting the PAT, payment of all outstanding arrears, prompt disbursement of the MRTF, and full settlement of the accumulated professional allowance backlog.
It warned that it would reconvene at the expiration of the ultimatum to assess the level of compliance and determine its next course of action, adding that failure by the government to meet its demands within the stipulated timeframe would result in the resumption of the suspended strike without further notice.
NARD also called on its members nationwide to remain calm, united and resolute, while urging the Federal Government to act swiftly to prevent a potential crisis in the health sector.
The association further appreciated the interventions of the Vice President and other stakeholders, expressing hope that their involvement would lead to the timely resolution of the dispute and help sustain healthcare delivery across the country.
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