Can Damaged Sperm Lead To Pregnancy Complications? Study Highlights Uncommon Issues

Updated Oct 17, 2024 | 02:00 AM IST

SummaryDamaged sperm DNA increases the risk of complications such as preeclampsia and premature birth, even doubling it, according to a new study. These findings could make a difference in the execution of fertility treatments and delivery outcomes.
Can Damaged Sperm Lead To Pregnancy Complications?`

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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Over 40% Prostate Cancer Patients in India Diagnosed After Cancer Has Spread: ICMR study

Updated Feb 27, 2026 | 09:00 PM IST

SummaryIn India, prostate cancer is the second most common cancer among men, accounting for more than 60 percent of the cancer's burden in South-Central Asia. India reported 34,540 incidences of prostate cancer and 16,783 deaths in 2020.
Over 40% Prostate Cancer Patients in India Diagnosed After Cancer Has Spread: ICMR study

Credit: Canva

A recent study by the Indian Council of Medical Research (ICMR) showed that more than 40 percent of prostate cancer patients in the country are diagnosed after the cancer has spread.

The 43 percent of late diagnosis cases indicates the significant burden of late detection of prostate cancer in the country. This can not only limit treatment options but also lead to poorer survival outcomes.

The study, published in the Indian Journal of Surgical Oncology, revealed that while more than 80 per cent began treatment within two months, but referral patients experienced longer delays.

Researchers from the ICMR’s National Centre for Disease Informatics and Research, in Bengaluru, stressed the need to strengthen referral pathways to ensure timely, stage-appropriate care.

“Our study indicates that over 80 percent of patients commence treatment within two months of diagnosis, but referral systems and delays in care persist,” said corresponding author Prashant Mathur, Director, ICMR-NCDIR, in the paper.

“To address these challenges, the healthcare system must prioritize improving referral efficiency, reducing administrative bottlenecks, enhancing coordination through digital health records, and multidisciplinary tumor boards,” the authors added.

Age, The Strongest Risk Factor For Prostate Cancer

The ICMR study is based on an analysis of 9,347 cases from 96 hospitals under the National Cancer Registry Program.

The researchers found that 75.6 percent of total prostate cancer cases occurred in the age group of 60–80 years, indicating that advanced age remains the biggest risk factor for the condition.

As life expectancy increases, more men reach the higher-risk age group, but awareness and screening practices have not scaled proportionately.

Adenocarcinoma was the most common pathology, constituting 77 percent of cases.

It is the most common form of prostate cancer, accounting for over 95 per cent of all cases. It develops in the gland cells that produce prostate fluid and typically grows slowly over several years.

Further, the ICMR researchers noted that about 57 percent of cases were diagnosed with localized (29.9 percent) or locoregional (27 percent) cancer.

Thirty percent underwent surgical treatment, and 22 percent received radiation therapy. Systemic therapy was the most common single modality treatment.

“Early detection and streamlined referral pathways are essential to improve prostate cancer outcomes in India,” the researchers said.

Prostate Cancer And Its Prevalence In India

Prostate cancer forms in the cells of the prostate -- a gland found only in males and a part of the male reproductive system. It lies below the urinary bladder and in front of the rectum.

Nearly all prostate cancers develop from glandular cells (adenocarcinomas).

Globally, prostate cancer is the most frequently diagnosed cancer among men in 112 countries and the leading cause of cancer death in 48 countries. In 2020, an estimated 1.4 million new cases of prostate cancer and 0.37 million deaths were reported worldwide.

In India, it is the second most common cancer among men, accounting for more than 60 percent of the prostate cancer burden in South-Central Asia. As per the ICMR data, the country reported 34,540 incidences of prostate cancer and 16,783 deaths.

Prostate cancer symptoms include urinary difficulty, a weak stream, or blood in the urine.

As prostate cancer is a slow-developing disease, it often causes no symptoms during the early-stage, leading to delayed medical consultation.

Other reasons for late detection in India include low awareness, limited routine screening -- PSA (prostate-specific antigen) programs; social stigma and hesitation due to embarrassment or cultural taboos.

Lack of access to specialist care, diagnostic facilities, and cancer centers, especially in rural populations, coupled with cost and referral gaps, also leads to delay in diagnosis.

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Expert Warns: Three Steps to Protect Against Colon Cancer

Updated Feb 27, 2026 | 10:11 PM IST

SummaryIn his interview with the American journal, Dr. Jordan Karlitz shared three best prevention factors for colorectal cancer. Th American Cancer Society notes that colorectal cancer impacts around 1.9 million people every year
Dr. Jordan  Karlitz Shared Three Fundamentals Of CRC Prevention.

Credit: Unsplash

Colon cancer develops from polyps in the colon or rectum, often taking years to show symptoms. The cancer begins when small growths called polyps form on the inner lining of the colon or rectum. Over time, changes in the DNA of these cells can cause the polyps to become cancerous.

As abnormal cells multiply, they replace healthy cells and eventually form a mass known as a tumor. This process develops slowly, often taking up to ten years for a precancerous polyp to turn into cancer and begin showing symptoms.

The American Cancer Society notes that colorectal cancer impacts around 1.9 million people every year.. In India, it is the fourth most common cancer among both men and women. In 2022, there were 64,863 new cases and 38,367 deaths.

Projections suggest that incidence will continue to rise by 2026, reflecting both lifestyle changes and improved detection.

Colon cancer can be difficult to detect because it often develops without obvious symptoms. However, Dr Jordan Karlitz, MD, of Exact Sciences, shared with The American Journal of Managed Care (AJMC) the three fundamentals of CRC prevention and early detection.

What Are The Three Tips For CRC Screening?

According to the expert, these are the three things you should do to protect yourself:

1. Timely risk screening

2. Knowing your cancer family history

3. Acting on early symptoms

"These are the 3 pillars that everybody needs to be aware of, because I think gaps in any of them could increase the risk of developing CRC and, unfortunately, lead to presenting with more advanced-stage disease," said Dr Karlitz.

Why Is Risk Screening Essential?

Timely screening for colon cancer is essential because it detects precancerous polyps early, allowing for their removal before they turn into cancer and identifies the tumors at highly treatable stages when survival rates are about 90 percent.

Screenings (like colonoscopies) can detect and remove pre-cancerous growths called polyps, preventing the development of cancer. The expert suggested that average risk screening now starts at the age of forty-five; you do not have to wait until age 50.

What Early Symptoms Should You Look Out For?

Colon cancer rarely announces its presence with dramatic symptoms. More often, it whispers — through changes in bowel habits, subtle abdominal discomfort, or unexplained weight loss.

Some of the most commonly missed early signs include:

  • Persistent changes in bowel movements: Chronic constipation or diarrhea often dismissed as dietary effects.
  • Blood in stool: Bright red or dark blood should not be ignored.
  • Unexplained weight loss: Especially when unintentional.
  • Abdominal cramps or bloating: Misinterpreted as common digestive issues.

Persistent changes in bowel habits, especially if they last more than a few days, must be taken seriously. Narrow or ribbon-shaped stools may indicate a tumor partially blocking the colon.

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This Zoonotic Disease Of Himalayas Is Re-emerging But Recognition Remains Poor

Updated Feb 27, 2026 | 06:00 PM IST

SummaryScrub typhus, a mite-borne zoonotic disease, is re-emerging in the Himalayan region but remains underdiagnosed. Delayed treatment leads to severe complications. Spread through chiggers and rodents, rising environmental changes are increasing transmission risk across India and Asia.
This Zoonotic Disease Of Himalayas Is Re-emerging But Recognition Remains Poor

Credits: iStock

A Himalayan zoonotic disease, which is transmitted by mite bites, known as Scrub typhus, is re-emerging. However, the attention and recognition to its threat remains poor. A Mongabay report noted the life of Maya Rai, 38, from Dajeeling, who works throughout the day. Her packed schedule does not allow her to stop working. When there is a febrile illness, it is "just another fever".

However, one monsoon, the fever hit her hard, while she thought it will pass too with some rest. She felt too weak to work. She received no clear diagnosis at the local Public Health Center (PHC), and was sent home with just painkillers. However, her condition did not improve. She experienced fever with cough, nausea, breathlessness and discomfort. Being a wage worker, she missed seven days, which meant no money for a week. She was finally taken to a private hospital in town, hours away from her village and the rapid test confirmed 'scrub typhus'.

This is an infectious disease caused by a bacterium Orientia tsutugamushi. Maya was prescribed antibiotics and was able to survive. However, there are many cases where this febrile fever is treated like any other fever, until it is too late. Many cases arise much later in front of a medical healthcare provider, when complications like acute respiratory distress, liver inflammation, kidney failure, and multiorgan dysfunction syndrome (MODS) have already happened.

Another case is from rural west Sikkim, where a 35-year-old Ganga Chhetri also had similar symptoms. However, by the time she was diagnosed, her organs were already critical. Ganga was also breastfeeding her two-year-old child and caring for her four-year-old.

Re-emergence of Scrub Typhus

The disease is locally known as kira le toke ko bimari, which literally translates it as a disease from an insect bite. This is re-emerging in the Dajeeling-Sikkim region of the Indian Himalayas, and is a public health concern in India. The cases have been reported across the country in India, as well as in other Southeast Asian countries. This affects one million people annually around the globe.

Scrub typhus was once confined to the Asia-Pacific’s ‘Tsutsugamushi Triangle’, a geographic stretch from northern Japan to Russia and northern Australia. Today, while this has changed, the disease still poses threat to many, including those living in the Himalayan region.

What Is Scrub Typhus And How Does It Spread?

It is an acute, potentially fatal, rickettsial infection that is caused by Orientia tsutsugamushi and transmitted by larval mites (chiggers) in rural areas.

At its core, scrub typhus in humans is associated with four interconnected elements: small mammals, particularly rats, tiny parasitic mites, the bacterium Orientia tsutsugamushi, and the environment they inhabit together. The disease is spread specifically by the larval stage of trombiculid mites, commonly known as chiggers. Only the larvae transmit the infection, passing it to humans through their bite.

These chiggers feed on the blood of small mammals such as rats, which play a key role in sustaining mite populations. Rats can also carry Orientia tsutsugamushi and pass the bacteria to mites that feed on them. In contrast, the nymph and adult stages of the mite, typically found in soil and vegetation, do not spread the disease.

Humans become infected when they enter areas infested with mites or environments with high rat populations, allowing infected chiggers to shift from rodents to people. The likelihood of such spillover events increases when rodent numbers grow, mite populations expand, or human contact with rats intensifies.

Factors such as land use changes, shifting weather patterns, natural disasters, deforestation, rapid urbanization, and increased garbage accumulation can create conditions that favor rodent and mite proliferation, thereby raising the risk of disease transmission.

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