Silviya Nikolova

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This study looked at how different eating habits around the world are linked to the frequency and severity of irritable bowel syndrome (IBS). Researchers surveyed over 54,000 people from 26 countries and found that those in certain dietary groups experienced IBS more often and with more severe symptoms — for example, dietary groups A and B had IBS rates of 5.6% and 4.5%, respectively, while groups C and D had rates of 3.4% and 2.6%. Understanding these dietary links is important because it could help in managing IBS symptoms through dietary changes. Who this helps: Patients dealing with IBS and healthcare providers.

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This study looked at the levels of harmful and beneficial elements in bluefish from the Black Sea when cooked in different ways (like pan-frying, smoking, and grilling) compared to when it's raw. It found that cooking often increased both the unhealthy elements (like cadmium and lead) and essential nutrients, but overall, the levels of toxic metals stayed within safe limits. Eating cooked bluefish is not linked to significant health risks, making it a safe choice for health-conscious consumers. Who this helps: This helps seafood lovers and those concerned about food safety.

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This study looked at a nearly complete horse skeleton from the Early Iron Age, dating back to the 8th century BCE, found in Bulgaria. Researchers found signs of heavy wear on the horse's teeth and damage to its backbone and leg bones, indicating that the horse was likely used for hard work like pulling loads. This research is important because it offers rare insights into how horses were utilized and managed in ancient southeastern Europe, an area with very few well-documented horse remains from this time. Who this helps: This helps historians and archaeologists studying ancient agricultural practices and animal use.

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This study examined blood samples from pregnant women who used assisted reproductive technology to determine if immune cell levels could predict the likelihood of miscarriage or live birth. The researchers found that women who had a miscarriage due to chromosomal abnormalities (aneuploidy) had higher levels of a type of white blood cell called basophils, while those who had live births had higher levels of another immune cell type, Th17. Understanding these immune signatures could help doctors better identify pregnancies at risk of miscarriage, particularly those affected by chromosomal issues. Who this helps: This helps patients trying to conceive and their healthcare providers.

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This study looked at the different types of stress faced by international medical students, including academic pressure, adapting to a new culture, dealing with school management issues, and experiencing discrimination. Researchers collected responses from 322 students and found that academic stress was the biggest concern, with other stress types closely linked to it. These findings highlight the importance of creating better support systems in schools to help international students manage stress more effectively. Who this helps: This helps international medical students.

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This study looked at creating silver nanoparticles from a specific type of microalga and evaluated how these nanoparticles affect the chemical makeup and health benefits of the algal extract. The researchers found that the silver nanoparticles were mostly round and small, measuring between 10 and 50 nanometers, and had strong antibacterial effects, especially against bacteria like Staphylococcus. Additionally, these nanoparticles altered muscle activity in gastric tissue, suggesting they might help with digestive issues and could be used in health products and treatments. Who this helps: This benefits patients with digestive problems and those seeking natural remedies for infections.

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This study looked at how frailty and quality of life (QoL) affect each other in older people living in England. Researchers found that as frailty increases, quality of life tends to decrease, and vice versa, but the influence each has on the other is minimal over a two-year period. With 17,529 participants, the findings suggest that both frailty and quality of life are closely linked, which is important for understanding the health needs of older adults. Who this helps: This helps healthcare providers and older adults by highlighting the importance of monitoring both frailty and quality of life.

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This study focused on how heading a soccer ball, which can lead to small impacts on the head known as sub-concussive impacts, affects brain activity. Researchers used EEG tests on soccer players before and after they headed a ball and found that the test could accurately detect changes in brain activity 24 hours after the impacts, but not immediately afterward. These findings are important because they could lead to a new tool for determining if soccer players have experienced harmful effects on their brain from heading the ball. Who this helps: This benefits soccer players and their coaches by providing a way to monitor brain health after heading the ball.

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This study looked at the bacteria present in the lungs of children with cerebral palsy (CP) to understand how it affects their health. It found that these children often have fewer helpful bacteria and more harmful ones, which can lead to more respiratory infections and other serious health issues. Understanding these changes is important because it highlights how the bacteria in their lungs may put children with CP at greater risk for respiratory problems, and it opens the door for future research on improving their health. Who this helps: This helps children with cerebral palsy and their healthcare providers.

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The study looked at how well people in Bulgaria understand celiac disease (CD), a condition where eating gluten causes serious health problems. Out of 191 patients and caregivers surveyed, 94% recognized that CD is a lifelong condition, but only 27% knew it was an autoimmune disorder. Many patients faced challenges in getting diagnosed, which took an average of 8 months, and struggled to stick to a gluten-free diet due to misunderstandings and social obstacles. This research highlights the urgent need for better public awareness and education to help improve diagnosis and support for people living with CD. Who this helps: Patients with celiac disease and their caregivers.

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This study looked at how brain connections, especially in an area called the periaqueductal gray (PAG), are related to headaches that occur after a mild brain injury. Researchers found that people with these acute post-traumatic headaches had different brain connectivity patterns compared to healthy individuals, with increased connections in areas related to pain and lower connections in other regions. These findings can help identify which patients are at risk of having long-lasting headaches after their injury, as they found that a specific brain connection model could predict headache improvement with 82% accuracy. Who this helps: This helps patients recovering from mild brain injuries by identifying those who may need additional care.

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This study looked at the use of caraway essential oil as a natural preservative in low-salt cheese brine, particularly for white brined cheeses like Bulgarian cheese. Researchers found that a small amount (0.12%) of caraway essential oil effectively stopped harmful bacteria from growing, even in highly contaminated samples, while still keeping the cheese tasting great with a perfect score in flavor testing. This matters because it offers a safe, natural way to preserve cheese without compromising how it tastes, which meets consumer demand for healthier food options. Who this helps: This helps cheese producers and consumers looking for natural food preservation methods.

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This study looked at the cost-effectiveness of using genetic tests for BRCA mutations along with a targeted treatment called olaparib for patients with certain types of early breast cancer. It found that using this combined approach costs £49,327 for each additional year of healthy life gained, and is more effective for triple-negative breast cancer patients than for those with other types. This matters because it demonstrates that investing in genetic testing and custom therapies can lead to better outcomes for patients, even if the costs are higher. Who this helps: This helps patients with BRCA-mutated high-risk breast cancer and their doctors.

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This study looked at how brain activity changes in people with post-traumatic headache (PTH) after a mild brain injury compared to healthy individuals. Researchers found that those with improving headaches showed a steady return to normal brain activity, while those without improvement had persistent abnormalities, particularly in three brain areas. This is important because it helps identify who might continue to struggle with headaches, leading to better-targeted treatments. Who this helps: Patients suffering from post-traumatic headaches.

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This study looked at how certain personality traits, called callous-unemotional (CU) traits, relate to the sharing of non-consensual sexts among young people in 11 different countries. The researchers found that individuals with high callousness and low emotionality were more likely to share sexts without consent, especially with partners and strangers. Notably, younger people and women were more frequently involved in non-consensual sexting than older individuals and men. This research highlights the importance of improving sexual education to help prevent harmful outcomes related to sexting. Who this helps: This helps young adults and educators.

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This study looked at work-related musculoskeletal disorders (WMSDs) among 80 office workers in Varna, Bulgaria. It found that a high number of employees reported these issues, with 88.8% experiencing neck pain, 83.8% reporting lower back pain, and 75.0% suffering from shoulder pain. The research highlighted that factors like higher body weight and longer work experience are linked to more severe symptoms, showing the need for better workplace health measures to prevent these problems. Who this helps: This helps office workers and their employers by identifying ways to make workplaces healthier.

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This study examined the iron levels in Bulgarian children with cerebral palsy (CP) and autism spectrum disorder (ASD). It found that 62.7% of children with CP and 36.8% of children with ASD had low iron reserves, which can affect their development. The results show a significant need for dietary changes and nutritional support to help these children grow and develop properly. Who this helps: This information benefits children with CP and ASD and their families, as well as healthcare providers working with them.

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This study examined how effective and valuable the antibiotic aztreonam-avibactam (ATM-AVI) is for treating tough infections caused by resistant bacteria in Spain. Researchers found that using ATM-AVI could lead to nearly 19,533 fewer infections, save 4,662 lives, and result in a cost saving of approximately €40.5 million over 10 years. Overall, the use of ATM-AVI is not only effective but also financially beneficial, making it an important option for treating serious infections linked to resistant bacteria. Who this helps: Patients suffering from severe infections caused by multidrug-resistant bacteria.

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This study looked at the shape and size of the inside of skulls with a condition called metopism, which is a fusion of certain skull bones. Researchers analyzed 230 skulls, finding that those with metopism had some parts of their skull significantly longer and the endobregma—a specific point on the skull—was closer to the front and middle sections. The best computer model they created to classify these skulls had an accuracy of 85%, helping to identify skull shapes more accurately. Who this helps: This benefits doctors and researchers studying skull abnormalities and their implications for understanding human development.

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This study looked at the differences in the shape and size of the coxal bones (part of the pelvis) between men and women, using computer scans of 276 adult Bulgarians. Researchers found clear differences in these bones, and they developed machine learning models that could accurately determine a person's sex based on these measurements, achieving an accuracy rate between 95% and 100%. Understanding these differences is important for fields like anthropology and for improving forensic identification techniques. Who this helps: This benefits forensic scientists and medical professionals involved in identifying human remains.

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This study looked at how adding oregano essential oil (OEO) to low-salt brine can help preserve white brined cheese by preventing harmful bacteria. Researchers found that this mixture effectively killed bacteria like E. coli and Staphylococcus aureus, needing only very small amounts of OEO to do so. Specifically, it required just 0.025% OEO to kill E. coli and between 0.05% and 0.1% for Staphylococcus, and these effects lasted for a week regardless of temperature, making OEO a useful option for lowering salt levels in cheese while keeping it safe to eat. Who this helps: This benefits cheese manufacturers and health-conscious consumers looking for lower-salt options.

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This study looked at headache symptoms in adults who had mild traumatic brain injuries (mTBI). Researchers found that people with post-traumatic headaches (PTH) reported significantly higher allodynia symptoms (pain from normally non-painful stimuli) with an average score of 3.6, compared to just 0.1 in healthy individuals. Additionally, 44.8% of those with PTH experienced improvement in their headaches after three months, but those who didn't improve had higher allodynia scores at the start and follow-up visits. Who this helps: This helps patients with post-traumatic headaches and their doctors.

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This study looked at using advanced AI methods to improve how doctors classify headaches based on brain MRI scans. Researchers trained a model on data from 721 individuals, including those with migraines and other headache types, achieving high accuracy rates: 89.96% for migraine detection, 88.13% for acute post-traumatic headache, and 83.13% for persistent post-traumatic headache. This is important because it helps doctors use brain imaging more effectively to understand headaches, leading to better diagnosis and treatment. Who this helps: Patients suffering from various types of headaches.

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This research studied how the introduction of a new payment system for hospitals in Kazakhstan, called diagnosis-related groups (DRG), impacted hospital operations and care quality after it was rolled out in 2012. The study found that hospitals that participated in an early pilot program responded better to the new system, but overall, there were no significant improvements in patient care quality, as shown by stable mortality rates during the first year. These results highlight the importance of how reforms are implemented and indicate the need for ongoing research to understand their longer-term effects. Who this helps: This helps hospital administrators and health policy makers improve hospital operations and patient care in Kazakhstan.

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This study looked at how certain patterns of growth and development in human embryos are affected by chromosomal mosaicism, which means that some cells have different genetic makeup. Researchers examined 182 embryos and found that those with mosaicism showed early developmental delays compared to normal embryos, taking about 25 hours to fade pronuclei and 28 hours to cleave, while normal embryos took around 23 and 25 hours, respectively. However, embryos with mosaicism eventually developed at a similar pace to normal ones later on, whereas embryos with chromosomal abnormalities (aneuploid) experienced significant delays in later stages, indicating that chromosomal health affects embryo growth. Who this helps: This research benefits patients undergoing in vitro fertilization (IVF) by providing insights for better embryo selection.

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This research paper looked at how geographic information systems (GIS) are used to study healthcare access in Europe, especially during the COVID-19 pandemic. It found that people living in rural areas often have worse access to healthcare than those in cities, which is influenced by factors like transportation and the number of healthcare facilities. Improving the use of GIS could lead to fairer healthcare access across Europe, but there are challenges, such as inconsistent data and varying use of technology in different regions. Who this helps: This benefits patients, especially those in rural areas seeking better healthcare access.

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This study looked at the symptoms of pain sensitivity and how it relates to headaches occurring after mild traumatic brain injuries (mTBI). Researchers found that people with these headaches had a significantly higher level of sensitivity to touch and pain, scoring an average of 3.6 on the Allodynia Symptom Checklist compared to just 0.1 in healthy individuals. At the three-month mark, about 57% of participants reported some headache improvement, but those who didn't improve had higher sensitivity scores at both the beginning and follow-up visits. Who this helps: This research benefits patients suffering from post-traumatic headaches, especially women.

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This study looked at the shape and size of the internal base of the skull in two groups: one with a condition called metopism (where the forehead sutures fuse early) and a control group without this condition. Researchers examined 46 metopic skulls and 183 normal skulls and found that although the size of the skull bases was similar, the shapes were different in most areas, except for one part. This is important because understanding these differences can give insights into how skull shapes develop and help improve diagnoses related to cranial conditions. Who this helps: This helps doctors and researchers studying cranial development and associated abnormalities.

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This study looked at how different cooking methods—grilling, pan-frying, and smoking—affect the nutritional value of Bluefish from the Black Sea. It was found that cooking can reduce moisture in the fish by 7-18% and change its fat content significantly. For example, pan-frying reduced beneficial fatty acids by about 25%, while smoking helped preserve more nutrients like omega-3 fatty acids and vitamin E. Who this helps: This information is valuable for patients and health-conscious consumers who want to maximize the nutritional benefits of their fish meals.

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This study looked at whether injecting activated blood cells into the uterus before embryo transfer could improve the chances of pregnancy in women undergoing IVF. Researchers found that 38.3% of women who received this treatment had successful implantation of the embryo, compared to only 27.7% in the standard care group. Additionally, the live birth rate was higher in the treatment group at 28.7%, versus 17.6% for those who did not receive the treatment. Who this helps: This research benefits women undergoing IVF treatments who are looking for better chances of successful pregnancies.

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This study reviewed research on a group of plants known for their potential health benefits, looking at 134 studies published from 1990 to 2025. The researchers found that certain chemicals in these plants, like thiophenes and terpenes, show promise in fighting inflammation, malaria, diabetes, cancer, and protecting the brain. These findings matter because they highlight a natural source that could lead to new treatments, although more testing is needed to ensure these compounds are safe and effective for medical use. Who this helps: This helps patients seeking alternative therapies and doctors looking for new treatment options.

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This research examined how silver nanoparticles (tiny particles of silver) can be used to deliver the drug mebeverine, which is commonly prescribed for irritable bowel syndrome (IBS). The study found that these silver nanoparticles can effectively carry mebeverine without causing harmful genetic effects. This discovery could improve how IBS is treated, making the delivery of the medication more effective. Who this helps: Patients with irritable bowel syndrome.

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This study looked at how silver nanoparticles (tiny particles of silver) can be made using two different sources: one from a bioreactor in Bulgaria and the other from a local health food store. The researchers found that the size and effectiveness of the particles varied, with the bioreactor source producing smaller particles (4-8 nanometers) and the store source producing larger ones (about 20 nanometers). The extracted particles showed good antibacterial properties and were effective at protecting proteins from heat damage. Who this helps: This research benefits patients who need better treatments for infections and inflammation.

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This study looked at the fruits of the cherry laurel tree, specifically a variety called Novita, which grow in Southern Bulgaria. Researchers found that the fruit, especially when extracted with 96% ethanol, has a high amount of beneficial compounds called polyphenols and flavonoids, which are linked to strong antioxidant properties. These fruits also showed good ability to fight against various microorganisms, indicating that they might have health benefits. Who this helps: This benefits health-conscious consumers, researchers, and the food industry.

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This study looked at combining a drug called mebeverine with silver nanoparticles to improve treatment for irritable bowel syndrome (IBS). The researchers found that while the silver nanoparticles reduced inflammation less than mebeverine alone, they still performed better than another common anti-inflammatory drug, diclofenac. This matters because it suggests a new way to safely deliver medications for IBS, potentially leading to more effective treatments in the future. Who this helps: Patients with irritable bowel syndrome.

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This study looked at silver nanoparticles loaded with a drug to see if they could fight harmful fungi and reduce inflammation in the gut. The researchers found that these nanoparticles were effective against various fungal strains and harmful bacteria, while also helping to lower inflammation and influence liver cell growth. This matters because these findings could lead to new treatments for gut and liver issues linked to infections and inflammation. Who this helps: This helps patients with gut and liver health problems, as well as doctors looking for new therapies.

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Researchers studied Moringa oleifera leaf extracts from India to understand their health benefits. They found that one of the leaf extracts had about twice the amount of amino acids and organic acids compared to the other sample. The extracts showed strong antioxidant properties, with the 50% ethanol extract demonstrating better results than a common anti-inflammatory drug, and it increased muscle contractions in lab tests by up to 134%. Who this helps: This benefits patients seeking natural remedies for inflammation, infections, and digestive issues.

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This research paper examines a plant known as the "miracle tree," highlighting its impressive nutritional benefits and potential health applications. Researchers reviewed over 200 studies and found that its leaves can significantly reduce inflammation and blood sugar levels, while its seeds have shown strong antibacterial and cancer-fighting effects. The findings are important because they reveal how this plant could be used not just as food, but also as a treatment for various health issues, including diabetes and cancer. Who this helps: This helps patients, healthcare providers, and the food industry.

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This study examined two different types of microalgae powders to see how their composition and particle size influence their health benefits. The first sample, from India, had finer particles and contained more beneficial compounds like saturated fatty acids, while the second sample, from the UK, had coarser particles and higher levels of unsaturated fatty acids. Overall, the Indian sample showed stronger anti-inflammatory effects and better influences on stomach muscle contraction compared to the UK sample, making it more effective for improving digestive and metabolic health. Who this helps: This research benefits patients seeking better nutritional options for digestive and metabolic issues.

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This study looked at how a personalized nutrition plan, created by a team of experts, affects the health of children with cerebral palsy (CP). Researchers will include 100 children aged 2-12, comparing those on a custom diet to those receiving standard care. They aim to see improvements in growth, health, and quality of life, which is important because children with CP often face nutrition-related challenges. Who this helps: This helps children with cerebral palsy and their families.

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This study focused on a rare skin condition called dystrophic epidermolysis bullosa (DEB), where the skin is very fragile and blisters easily. Researchers examined a woman with no family history of the condition and found she had two genetic changes in the COL7A1 gene, which plays a key role in skin integrity. Identifying these specific gene mutations allows for better personalized care and counseling for her future health and family planning. Who this helps: This helps patients with dystrophic epidermolysis bullosa and their families by providing clearer information about their condition.

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Researchers looked at how measuring certain angles in the skull can help determine a person's sex more accurately. They analyzed CT images from 154 men and 180 women and found that using cranial angles improved sex prediction accuracy significantly, especially with angles related to the forehead and midface. This is important because it means we can get more reliable sex estimates, which is useful in fields like forensics and anthropology. Who this helps: This helps forensic scientists and anthropologists in their work.

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This study looked at using advanced computer programs (deep learning models) to analyze eye photographs to identify Alzheimer’s disease. Researchers developed two models, and found that one model (called ADRET) correctly identified Alzheimer’s in 98.9% of cases, compared to 77.2% for the other model. This is important because it means there’s a very accurate way to help diagnose Alzheimer’s through eye scans, which could lead to earlier treatment and better patient outcomes. Who this helps: This helps patients at risk for Alzheimer’s disease and their doctors by providing a more reliable diagnosis method.

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The study focused on a new material made from modified silica nanoparticles, which can detect harmful mercury (Hg) and chromium (CrO) ions in liquids. Researchers found that this material can identify mercury at very low concentrations, around 5.4 trillionths of a gram per milliliter, and chromium at about 3.3 trillionths of a gram per milliliter. This is important because early detection of these toxic metals can help prevent health problems related to exposure. Who this helps: This research benefits environmental scientists, public health officials, and communities at risk of metal pollution.

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This research focused on developing new versions of a medication called mebeverine, commonly used to treat irritable bowel syndrome (IBS), which causes painful symptoms like cramps and bloating. The study found that these new compounds worked better at relieving muscle spasms compared to traditional mebeverine and also showed strong anti-inflammatory properties. These findings are important because they suggest that these new medications could offer better relief for patients suffering from IBS and related gastrointestinal issues. Who this helps: This helps patients with irritable bowel syndrome and similar digestive problems.

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The study focused on phycocyanin (PC), a green pigment obtained using eco-friendly extraction methods. Researchers confirmed PC's structure and assessed its safety and potential health benefits using computer-based analyses. They found that it has a favorable safety profile, doesn't bind to DNA or proteins, and may help with heart health, inflammation, brain protection, and immune function. Who this helps: This research benefits patients looking for natural treatments and doctors seeking effective, safe therapies.

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This study looked at a plant used in traditional Eastern medicine to understand its beneficial properties. Researchers found that all parts of the plant, including the leaves, fruits, and seeds, have various health benefits such as fighting cancer, reducing inflammation, and boosting the immune system. This is important because it highlights the plant's potential for both medical treatments and improving diets in areas where it grows. Who this helps: Patients and communities in regions where the plant is found.