Can Damaged Sperm Lead To Pregnancy Complications?
Pregnancy is usually a time of happiness and hope, but it also brings in the unexpected. While there is much talk placed on the health of the expectant mother, the quality sperm coming from the father could dramatically change the outcome of pregnancy. The latest study suggests the risks of sperm DNA damage, even increasing the risks of complications preeclampsia and birth prematurity.
In a groundbreaking research study conducted by scientists from Lund University in Sweden, scientists discovered that DNA damage in sperm increases the risk almost up to double that of preeclampsia, this is a dangerous condition that may arise during pregnancies characterized by high blood pressure. In addition, DNA anomalies also increase the risk of premature births, and this further entails increased related adverse health outcomes for infants born through such conditions.
The next step would be to find out which group of men respond best to methods to prevent and treat sperm DNA damage, and to test these methods to prevent pregnancy complications," said Dr. Amelie Stenqvist, a lecturer at Lund University. According to this study, a significant message is put forward that paternal health assumes an important role in a successful pregnancy.
It focused its research on men, specifically whose sperm contained high levels of DNA fragmentation. For instance, some 20% to 30% of babies born via in vitro fertilization have fathers whose sperm contains damaged DNA. The DNA fragmentation index, an indicator to assess the percentage of DNA damage in sperm, indicated that when the percentage of sperm with a DFI above 30% was observed, they had almost no chance of resulting in natural conception. Even a DFI greater than 20% showed that the chances of getting pregnant are highly risky as the risk factor for pregnancy complications like preeclampsia is much high.
Uncommon Complications during Pregnancy
The most alarming complication during pregnancy is preeclampsia. It affects approximately 5% to 8% of pregnancies worldwide, which can cause fatal conditions for both the mother and the baby. The new findings now point out that sperm DNA damage may contribute to this condition, especially if it is due to assisted reproductive techniques such as IVF pregnancies. The research found that a DFI above 20% doubled the risk of preeclampsia from a mere 5% to almost 11% per.
Apart from causing preeclampsia, DNA fragmentation in sperm is also known to increase the risk for prematurity. Most premature babies experience respiratory, neurological, and developmental complications. Therefore, some degree of early intervention might be important for prospective parents.
Some of the rarer, though serious complications include placental abruption, which is the separation of the placenta from the uterine wall and intrauterine growth restriction, a condition by which the baby does not grow normally in the womb. These conditions though rare are potentially catastrophic both to the mother and the child. Results from this study may help in establishing the contribution of the father in such pregnancies.
Further study into sperm DNA damage is of urgent interest with regard to its consequences for pregnancy outcomes. According to Professor Aleksander Giwercman of Lund University in the field of Reproductive Medicine, "the analysis of DFI should be introduced as routine test in all fertility clinics.". "It could give answers to couples who are having difficulties with infertility, but our latest result also shows that DFI analysis can be a method to identify high-risk pregnancies, explained Giwercman.
For many, DNA fragmentation in sperm is often treatable. Common causes are oxidative stress, age, smoking, being obese, and infections. Addressing these elements will likely reduce DNA damage in sperm for men, raising the chances for a healthy pregnancy and baby.
Overall, the study importance should take into consideration paternal as well as maternal health towards reaching for a healthy pregnancy. Though DNA fragmentation in the sperm is supposed to increase the risk factors for complications in pregnancies, the advances into novel treatment approaches and tests are likely to alleviate complications in many families. Thus the findings of this study offer optimism and pave a pathway to more holistic fertility treatments in the future.
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For most parents, the toddler years are filled with first words, wobbly steps and dreams of the future. For Gus and Emily Forrester, those moments are now overshadowed by a diagnosis they describe as “every parent’s worst nightmare.”
Their two-year-old daughter, Leni, has been diagnosed with Sanfilippo Syndrome Type B, a rare genetic condition often referred to as childhood dementia. The disorder, formally known as Mucopolysaccharidosis type III, gradually robs children of their physical and cognitive abilities.
In an interview with ITV News, Leni’s parents spoke about the devastating reality of the condition, which has no approved cure or widely available treatment.
“All your dreams for your child's future are taken away,” her mother, Emily, said. “To be told that she has this condition, and there is no treatment and no cure and no support… it’s completely earth-shattering.”

Sanfilippo Syndrome is a neurodegenerative disorder caused by the body’s inability to break down certain complex sugars. Over time, these substances build up in the brain, leading to progressive damage.
According to Cure Sanfilippo Foundation, symptoms usually begin appearing between the ages of one and six. Children may initially show mild developmental delays, but the disease gradually worsens, affecting speech, mobility and behaviour.
As the condition advances, many children lose the ability to talk, walk and recognise loved ones. Life expectancy is often limited to the early teenage years.
Emily explained the process in stark terms. Without treatment, she said, Leni’s body will slowly be overwhelmed by “toxic waste,” causing irreversible damage.
For families like the Forresters, time is not just precious, it is critical.
“Early treatment is key for these children,” Emily said. “If she has to wait six months, that could mean she can no longer talk. If she waits 12 months, that could mean she loses the ability to walk.”
Although experimental therapies, including gene-based approaches, are being developed, access remains a major hurdle. Some clinical trials are expected to take place in the United States later this year, but Leni is not currently eligible.
Her parents are now campaigning for UK patients to be included in these trials, arguing that promising science already exists but remains out of reach for many families.
In response to the diagnosis, the Forresters have launched a fundraiser to support Leni’s care and potential treatment options. They have also pledged to donate part of the funds to Great Ormond Street Hospital, where Leni is receiving care, and to the Cure Sanfilippo Foundation, which supports affected families.
So far, donations have crossed $250,000, reflecting the growing awareness and concern around rare childhood conditions.
Leni’s father, Gus, said the emotional toll of the diagnosis is hard to put into words. “As parents, your role is to protect your children and provide every opportunity you can. Without any treatment, her future and her reality is very, very dark.”
Beyond fundraising, the couple is also raising awareness about childhood dementia and advocating for newborn screening programmes that could help detect such conditions earlier.
Experts working on experimental therapies say greater government investment is urgently needed. Without it, many children may never benefit from treatments that could slow or alter the course of the disease.
For now, Leni remains a cheerful two-year-old, full of life and affection. But for her parents, every passing day is a reminder of how quickly that could change, and how urgently answers are needed.
Every year, March 24 is observed as World Tuberculosis Day to spread awareness about the infectious disease. In India, it remains one of the most pressing infectious diseases. Dr Arup Halder, Consultant Pomologist at CK Birla Hospitals, CMRI says that India still accounts for roughly a quarter to over a quarter of world's tuberculosis or TB cases. "In 2023–2024, India reported around 25–26 lakh TB patients out of an estimated 27 lakh cases, reflecting improved detection but also highlighting a persistently high burden," he points out.
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While TB incidence has fallen by about 20 per cent since 2015 and mortality has also declined to roughly 21 deaths per lakh population, it still remains well above national elimination targets for 2025.
What makes TB so difficult to eliminate? While many associate TB with persistent coughing, studies show that 80 per cent of patients do not show the symptoms of cough that is "presumed" to be a common symptom. This is why, TB could go ignored until it is too late.
A research led by Amsterdam UMC and the Amsterdam Institute for Global Health and Development analyzed data on more than 600,000 individuals in Africa and Asia and found that around 82.8 per cent of those with TB had no persistent cough. The study also found that 62.5 per cent had no cough at all. The findings were published in the Lancet Infectious Diseases.
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The study in fact noted that this could be the "probable reason why, despite huge efforts to diagnose and treat the disease, the tb burden across Africa and Asia is hardly declining". Frank Cobelens, Professor of Global Health at Amsterdam UMC and Senior Fellow at the AIGHD says, "A persistent cough is often the entry point for a diagnosis, but if 80 per cent of those with TB do not have one, then it means that a diagnosis will happen later, possibly after the infection has already been transmitted to many others, or not at all."
Another 2019 study published in Elsevier notes: "Coughing does not appear to be a necessary prerequisite for TB transmission." The study further mentions, "Frequency of cough is associated with infectivity but this does not imply mechanistic causality for TB transmission."
The simple answer to this is: No. Coughing does not mean harmless, especially when it is a persistent one. The study only shows that TB does not always mean persistent coughing, however, if one experiences this symptom, they should always get a test done and should not ignore the symptoms.
Researchers from The University of Texas at Dallas' Center for Advanced Pain Studies working with colleagues from UT Southwestern Medical Center note that TB coughing could cause pain. This is one of the way one can distinguish the symptoms. The findings published in journal Cell notes that before this study, "no one had even shown that TB produces an irritant that acts directly on the sensory innervation of the lungs".
Corresponding author Dr Michael Shiloh, associate professor of internal medicine and microbiology at UT Southwestern said, "People with active tuberculosis can cough for months and spread disease even when they are receiving appropriate treatment."
Read: World Tuberculosis Day 2026: Theme, Origin, And Significance
On World TB Day, President Droupadi Murmu stressed that TB continues to pose a significant public health challenge and has affected millions of lives across the world. She urged all stakeholders to work together with collective resolve to end TB once for all.
To act on it, Union Health Minister Jagat Prakash Nadda will launch a series of initiatives, including 'TB Mukt Bharat Abhiyaan - 100 Days Campaign', the TB Mukt Bharat App, and the TB Mukt Urban Ward Initiative. These measures are designed to strengthen the case detection, improve treatment adherence, and enhance last-mile delivery of TB services, especially in high-burden areas. The initiatives have also been aligned with the objectives of the National Tuberculosis Elimination Programme.
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From physical problems like fatigue and vision problems, people who survive the deadly bacterial meningitis are likely to live with long-term fatigue and vision problems, as well as be at high risk of suicide, according to a new study.
The study comes as the UK is experiencing an outbreak of meningitis in Kent, that began among students who visited Club Chemistry in Canterbury between March 5 and 7.
Although bacterial meningitis is treatable, it requires prompt, often immediate treatment for better recovery. Yet patients are likely to face the risk of fatal or long-term complications -- from physical, psychological, and social impacts, said researchers from the University of Otago, The Conversation reported.
The new findings, based on 16 cases from New Zealand, who reportedly suffered the fatal disease, showed that multiple chronic after-effects is permanent in some, while in others, it dragged on for years. The effects include:
"Our findings demonstrate that bacterial meningitis is much more than a life-threatening infection. It is an acute disease with serious, chronic after-effects which are poorly understood and often go unrecognised," the researchers said.
The bug that causes the infection has been identified as the known strain of meningitis B, and MenB vaccines will be offered to 5,000 students living in the University of Kent halls of residence in Canterbury.
Meanwhile, the UKHSA chief executive, Susan Hopkins, said the outbreak "looks like a super-spreader" event with "ongoing spread" through universities' halls of residence.
"There will have been some parties, particularly around this, so there will have been lots of social mixing. I can't yet say where the initial infection came from, how it's got into this cohort, and why it's created such an explosive amount of infections," she added.
As per Trish Mannes, UKHSA Regional Deputy Director for the South East, even after two doses, the MenB vaccine “does not protect against all strains of meningococcal disease, nor against all infections that can cause meningitis. It also does not prevent the bacteria from being carried and spread in the community”.
The UKHSA thus warned people to be aware of the signs and symptoms of invasive meningococcal disease, and to seek immediate medical attention if they or anyone they know develops these signs and symptoms.
Common symptoms include:
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