Doctor, scientist and biomedical engineer Armen Khrlobyan about Dalimed

A stroke can occur without warning, but in most cases, the risk builds up gradually over time. The encouraging part is that many strokes are preventable. By adopting healthy habits and managing existing health conditions, you can significantly lower your risk and protect your long-term well-being. Build strong daily habits Choose healthy foods; A nutritious diet plays a central role in stroke prevention. Focus on fresh fruits and vegetables, whole grains, and lean proteins such as fish. Foods high in fiber help control cholesterol, while reducing salt intake supports healthy blood pressure. Limiting saturated fats and processed foods can further protect your blood vessels. Stay physically active; Regular exercise improves circulation, lowers blood pressure, and supports overall cardiovascular health. Aim for at least 30 minutes of moderate activity, such as brisk walking, on most days of the week. Even shorter periods of activity throughout the day are beneficial. Maintain a healthy weight; Being overweight increases the risk of conditions like high blood pressure and diabetes, both of which contribute to stroke. Even modest weight loss can make a meaningful difference in reducing risk. Avoid harmful habits Quit smoking; Smoking damages blood vessels, increases clot formation, and accelerates the buildup of plaque in the arteries. Quitting smoking is one of the most effective ways to reduce your stroke risk. Limit alcohol consumption; Excessive alcohol intake can raise blood pressure and increase the likelihood of stroke. Moderate consumption is recommended—generally no more than one drink per day for women and two for men. Take control of your health Monitor blood pressure; High blood pressure is the leading preventable cause of stroke and often develops without noticeable symptoms. Regular monitoring, along with lifestyle changes and medication if needed, is essential. Check cholesterol levels; High cholesterol can lead to narrowing of the arteries, reducing blood flow to the brain. Regular testing and proper management help lower this risk. Control diabetes; High blood sugar damages blood vessels over time, increasing the chance of clot formation. Managing diabetes through diet, physical activity, and medication helps protect your brain and heart. Treat heart conditions; Certain heart problems, especially irregular heart rhythms such as atrial fibrillation, can increase stroke risk by allowing clots to form and travel to the brain. Early diagnosis and proper treatment are crucial. Follow your treatment plan If you are prescribed medication for blood pressure, cholesterol, diabetes, or heart disease, take it exactly as directed. Do not stop or adjust your treatment without consulting your doctor, as consistent management is key to prevention. Stroke prevention does not require drastic measures. Simple, consistent choices—eating well, staying active, avoiding harmful habits, and managing your health—can have a powerful impact over time. Taking care of your health today is one of the most important steps you can take to protect your future.

Your blood contains important information that helps doctors understand how your body works and how to treat you safely. Two key characteristics are your blood group and your Rh factor. Both are inherited from your parents and remain the same throughout your life. What is a blood group? A blood group is determined by special markers called antigens on the surface of your red blood cells. Based on these antigens, blood is divided into four main groups: • Group A – has A antigens and produces anti-B antibodies • Group B – has B antigens and produces anti-A antibodies • Group AB – has both A and B antigens and no antibodies • Group O – has no antigens but produces both anti-A and anti-B antibodies Antibodies are proteins in the blood plasma that protect your body by identifying and attacking foreign substances. This system is very important because if you receive the wrong blood type, your antibodies may attack the donated blood, causing a serious reaction. What is the Rh factor? In addition to the ABO system, blood is also classified by the Rh factor, which is another protein found on red blood cells: • If the protein is present, your blood type is Rh-positive (+) • If it is absent, your blood type is Rh-negative (−) By combining the ABO groups with the Rh factor, there are eight common blood types: A+, A−, B+, B−, AB+, AB−, O+, and O−. Most people are Rh-positive. Why are blood group and Rh factor important? Knowing your blood group and Rh factor is essential in everyday medical care. They play a major role in: • Blood transfusions – You must receive compatible blood to avoid dangerous immune reactions. • Pregnancy – If an Rh-negative mother carries an Rh-positive baby, her immune system may form antibodies against the baby’s red blood cells. This condition, called Rh incompatibility, can be prevented with proper treatment. • Emergency situations – In urgent cases, doctors rely on blood type information to provide safe and quick treatment. In most cases, blood group and Rh factor do not affect your daily health. However, they become very important in specific medical situations where blood mixing can occur. A simple blood test can determine your blood type and Rh status. Knowing this information in advance helps prevent complications and ensures you receive the right care when it matters most.

Glycated hemoglobin, commonly known as HbA1c or simply A1C, is a key laboratory marker used to evaluate average blood sugar levels over time. Unlike a single blood glucose measurement that reflects only a moment in time, HbA1c provides a broader picture of how glucose has behaved in the body over the past two to three months. This makes it an essential tool in the detection and management of diabetes. How does HbA1c form? HbA1c is created through a natural process called glycation. When glucose circulates in the bloodstream, a portion of it attaches to hemoglobin — the protein inside red blood cells responsible for carrying oxygen. This binding happens gradually and continuously throughout the lifespan of red blood cells, which is about 120 days. The process occurs in two main stages: • First, glucose temporarily binds to hemoglobin, forming an unstable intermediate structure. • Then, this structure undergoes a chemical transformation into a stable compound known as glycated hemoglobin. Because this attachment is irreversible, the amount of HbA1c reflects the average level of glucose exposure over time. More glucose in the blood leads to higher HbA1c values. What does the HbA1c test measure? The HbA1c test determines the percentage of hemoglobin that has glucose attached to it. The result is expressed as a percentage, which corresponds to average blood sugar levels over the previous weeks. Typical interpretation includes: • Below 5.7% — normal range • 5.7% to 6.4% — increased risk (prediabetes) • 6.5% or higher — consistent with diabetes Healthcare providers use this test not only for diagnosis but also to monitor how well blood sugar is controlled over time. Why is HbA1c important? HbA1c plays a central role in long-term diabetes care because it offers insights that daily glucose checks cannot fully capture. It helps both patients and healthcare providers understand overall trends rather than isolated readings. Key benefits include: • Long-term assessment: Reflects average glucose levels over 2–3 months • Convenience: Does not require fasting and can be done at any time of day • Treatment guidance: Helps adjust medications, diet, and lifestyle strategies • Risk evaluation: Higher levels are associated with complications such as cardiovascular disease, nerve damage, kidney problems, and vision impairment Maintaining HbA1c within the target range significantly reduces the risk of these complications. How often should HbA1c be tested? For individuals diagnosed with diabetes, HbA1c is usually checked at least twice a year. More frequent testing may be needed if treatment changes or if blood sugar levels are not well controlled. It may also be used as a screening test in people with risk factors such as obesity, family history of diabetes, or low physical activity. Limitations of the HbA1c test Although HbA1c is highly useful, certain conditions can affect its accuracy. These include: • Disorders that shorten or prolong red blood cell lifespan (such as anemia or recent blood loss) • Hemoglobin variants (genetic differences in hemoglobin structure) • Pregnancy, especially in later stages • Advanced kidney disease In such cases, HbA1c results should be interpreted carefully and may need to be combined with other tests. Conclusion Glycated hemoglobin (HbA1c) is a reliable and widely used indicator of long-term blood sugar control. By reflecting average glucose levels over several months, it provides valuable guidance for diagnosing diabetes, monitoring treatment effectiveness, and reducing the risk of complications.

Dental plaque is a soft, sticky film that continuously forms on teeth as a result of normal biological processes in the mouth. It consists of bacteria, saliva components, and remnants of food. Although it is a natural occurrence, plaque becomes harmful when it is allowed to accumulate. Shortly after cleaning your teeth, a thin invisible layer forms on the enamel. This layer attracts bacteria, which begin to multiply rapidly. When food is consumed—especially sugars and starches—these bacteria feed on the particles and produce acids. This combination of bacteria, acids, and food debris forms plaque. Because this process happens constantly, plaque begins to rebuild within hours after brushing. What happens if plaque is not removed Plaque is the starting point of most common dental problems. If left untreated, it can lead to: • Tooth decay: Acids break down enamel, forming cavities • Gingivitis: Early gum disease characterized by redness, swelling, and bleeding • Periodontal disease: Advanced infection affecting supporting bone and tissues • Tartar formation: Hardened plaque that cannot be removed at home Additionally, plaque buildup is a common cause of persistent bad breath due to bacterial activity. Daily plaque removal strategies Effective plaque control requires a combination of habits: • Brushing twice daily: Use gentle, thorough movements and clean all tooth surfaces • Cleaning between teeth: Floss or use interdental tools to remove hidden plaque • Supporting products: Antibacterial or fluoride mouthwash may enhance protection Consistency is key, as plaque reforms quickly. Professional plaque and tartar removal When plaque hardens into tartar, it firmly attaches to teeth and often accumulates along the gum line. At this stage, only dental professionals can remove it through a procedure known as scaling. Professional cleanings may also include polishing, which smooths the tooth surface and helps reduce future plaque buildup. Why regular dental visits matter Routine dental check-ups allow early detection of problems caused by plaque. Depending on individual risk factors, visits are typically recommended every six months, though some individuals may require more frequent care. Conclusion Dental plaque is a natural but potentially harmful part of oral biology. Without proper care, it can lead to a range of complications affecting both teeth and gums. However, with consistent daily hygiene and regular professional care, plaque can be effectively controlled. Schedule your routine check-up today to ensure a healthy smile and prevent future complications.