Tag: brain

मेटफॉर्मिन का दिमाग पर असर: डायबिटीज की दवा या ब्रेन प्रोटेक्शन का नया संकेत?

by Maneesh Sharma, posted in Health and Wellness

Metformin टाइप 2 डायबिटीज (मधुमेह) के इलाज में सबसे ज्यादा इस्तेमाल की जाने वाली और सबसे भरोसेमंद दवा है। यह कई दशकों से उपयोग में है और आज भी नए डायबिटीज मरीजों में सबसे पहले शुरू की जाने वाली दवा मानी जाती है। इसकी सबसे बड़ी खासियत यह है कि यह सस्ती, सुरक्षित और लंबे समय तक उपयोग के लिए उपयुक्त है।

जब किसी व्यक्ति को पहली बार डायबिटीज का पता चलता है, तो डॉक्टर आमतौर पर सबसे पहले मेटफॉर्मिन ही देते हैं। इसका कारण यह है कि यह दवा ब्लड शुगर को प्रभावी रूप से कम करती है, वजन नहीं बढ़ाती और शुगर बहुत ज्यादा कम (हाइपोग्लाइसीमिया) होने का खतरा भी बहुत कम रखती है। इसी कारण इसे “फर्स्ट लाइन ड्रग” यानी पहली पसंद की दवा कहा जाता है।

मेटफॉर्मिन की सामान्य खुराक आमतौर पर 500 mg या 1000 mg होती है। इसकी शुरुआत अक्सर 500 mg दिन में एक बार भोजन के बाद की जाती है, और आवश्यकता अनुसार इसे बढ़ाकर 1000 mg दिन में एक या दो बार किया जा सकता है। यह ध्यान रखना बहुत जरूरी है कि यह दवा केवल चिकित्सक (physician) की सलाह और प्रिस्क्रिप्शन के बाद ही लेनी चाहिए, क्योंकि खुराक मरीज की शुगर लेवल, किडनी फंक्शन और अन्य स्वास्थ्य स्थितियों पर निर्भर करती है।

मेटफॉर्मिन मुख्य रूप से लीवर में बनने वाली अतिरिक्त शुगर को कम करती है और शरीर की इंसुलिन के प्रति संवेदनशीलता को बढ़ाती है। इसका मतलब यह है कि शरीर अपनी ही इंसुलिन का बेहतर उपयोग कर पाता है और ब्लड शुगर नियंत्रण में रहता है। यह दवा सीधे इंसुलिन को बढ़ाने का काम नहीं करती, इसलिए इसका उपयोग अपेक्षाकृत सुरक्षित माना जाता है।

मेटफॉर्मिन का उपयोग कई दशकों से किया जा रहा है और यह दुनिया की सबसे अधिक अध्ययन की गई दवाओं में से एक है। हाल के वर्षों में इसके प्रभावों, विशेषकर मस्तिष्क (brain) पर इसके संभावित प्रभावों को लेकर नई वैज्ञानिक रुचि बढ़ी है।

इस संदर्भ में एक महत्वपूर्ण प्रीक्लिनिकल अध्ययन Science Advances (2024, USA) में प्रकाशित हुआ, जिसमें चूहों (mouse model) पर किए गए शोध में पाया गया कि मेटफॉर्मिन मस्तिष्क में सूजन (inflammation) को कम कर सकती है और कुछ न्यूरोनल सिग्नलिंग pathways जैसे RAP1 signaling तथा ऊर्जा-संबंधी AMPK pathway को प्रभावित कर सकती है। यह अध्ययन संयुक्त राज्य अमेरिका के प्रमुख रिसर्च संस्थानों द्वारा किया गया था। इस शोध ने संकेत दिया कि मेटफॉर्मिन केवल मेटाबॉलिक दवा नहीं है, बल्कि यह brain aging और neuroprotection से जुड़े तंत्रों पर भी प्रभाव डाल सकती है। हालांकि यह अध्ययन अभी जानवरों पर आधारित है, इसलिए मनुष्यों में इसके प्रभाव को लेकर और क्लिनिकल ट्रायल्स की आवश्यकता है।

मेटफॉर्मिन केवल ब्लड शुगर को नियंत्रित करने तक सीमित नहीं है, बल्कि इसके कुछ अतिरिक्त फायदे भी देखे गए हैं। यह वजन को नियंत्रित रखने में मदद करती है और कुछ मरीजों में हल्का वजन कम भी कर सकती है। यह कोलेस्ट्रॉल और ट्राइग्लिसराइड जैसे फैट प्रोफाइल को भी सुधारने में मदद करती है, जिससे हृदय स्वास्थ्य पर सकारात्मक प्रभाव पड़ता है।

मेटफॉर्मिन आमतौर पर सुरक्षित मानी जाती है, लेकिन कुछ लोगों में शुरुआती समय में हल्की पेट संबंधी समस्याएँ जैसे मतली, गैस या दस्त हो सकते हैं। लंबे समय तक उपयोग में कुछ मरीजों में विटामिन B12 की कमी भी देखी जा सकती है, इसलिए समय-समय पर जांच जरूरी होती है। सही खुराक और डॉक्टर की सलाह के साथ इसका उपयोग सुरक्षित माना जाता है।

मेटफॉर्मिन आज भी टाइप 2 डायबिटीज के इलाज की सबसे महत्वपूर्ण और पहली पसंद की दवा है। इसका लंबा इतिहास, वैज्ञानिक प्रमाण और आधुनिक रिसर्च इसे विशेष बनाते हैं। हाल के Science Advances (USA, 2024) में प्रकाशित अध्ययन ने इसके संभावित न्यूरोप्रोटेक्टिव प्रभावों की ओर नई दिशा दिखाई है, हालांकि यह निष्कर्ष अभी प्रारंभिक हैं और मानव अध्ययन में पुष्टि की आवश्यकता है।

Metformin and the Brain: After 60 years journey diabetes drug explored to unexpectedly affect the brain

by Maneesh Sharma, posted in Health and Wellness
Image : Metformin

Metformin is a commonly used medicine for type 2 diabetes and has been trusted by doctors for many years. Earlier, it was believed that metformin mainly worked in the liver to control blood sugar. However, recent research has shown that it also works in the brain. This new discovery has changed how scientists understand the medicine and how the body controls sugar levels.

Scientists have identified a small protein in the brain called RAP1, which acts like a “switch” for controlling blood sugar. When RAP1 is too active, blood sugar levels can rise, but when it is controlled, sugar levels improve. Research studies have explained that metformin works by reducing the activity of this RAP1 protein in the brain. In simple terms, metformin helps turn off the “extra activity” of this switch, allowing the body to manage sugar more effectively.

To understand this better, researchers conducted experiments on mice. They used two groups normal mice and mice in which RAP1 was removed from the brain. Both groups were given metformin, and their blood sugar levels were observed. This experiment helped scientists clearly see whether RAP1 plays an important role in how metformin works.

The findings were very clear. In normal mice, metformin successfully lowered blood sugar levels. But in mice without RAP1, the medicine did not work properly. Researchers reported that “metformin failed to significantly lower blood glucose levels” in these mice. This proved that RAP1 is very important for metformin’s action, almost like a key that allows the medicine to work.

Another interesting finding was that when a very small amount of metformin was given directly into the brain, it quickly reduced blood sugar levels. Scientists described that “centrally administered metformin reduced blood glucose levels.” This shows that the brain acts like a control center, sending signals to other parts of the body, such as the liver and muscles, to regulate sugar levels.

Because metformin also works through the brain, some people may notice additional effects while taking it, such as reduced appetite, slight weight loss, and better energy balance. Researchers have also started exploring whether this brain-related action could help in conditions like Alzheimer’s disease, although more studies are still needed.

Experts have highlighted the importance of this discovery. One researcher stated, “It’s not just working in the liver or the gut, it’s also acting in the brain.” This finding changes a long-standing belief and shows that the brain plays a major role in controlling blood sugar and overall metabolism.

In nut cell metformin is no longer seen as just a medicine that works in the body it also works in the brain by controlling a protein called RAP1. This simple but powerful discovery shows how closely the brain and body are connected and may help in developing better treatments for diabetes and other health conditions in the future.

Amoebic Meningoencephalitis in India: Rising Cases and Urgent Lessons from Recent Incidents

by Maneesh Sharma, posted in Blog, Health and Wellness

Amoebic meningoencephalitis refers to inflammation of the brain and its covering (meninges) caused by amoebae microscopic free-living organisms.

Two major types are often found

1) Primary Amoebic Meningoencephalitis (PAM), most often caused by Naegleria fowleri. This is acute, aggressive, and nearly always fatal.

2) Granulomatous Amoebic Encephalitis (GAE), which is usually more subacute or chronic; can be caused by Acanthamoeba, Balamuthia mandrillaris or others.

Amoebae normally live in warm freshwater (ponds, hot springs, poorly maintained swimming pools), soil, or even dust. Infection generally happens when contaminated water enters via the nose (for PAM), allowing the amoeba to reach the brain. GAE amoebae may also enter through skin wounds or via inhalation of dust. Symptoms often begin suddenly (especially for PAM): high fever, severe headache, nausea, vomiting, stiff neck, confusion, seizures; progression is very rapid. In GAE, symptoms may be more gradual, sometimes over weeks. Treatment is difficult. Early detection is crucial. There is no guarantee of recovery, but with improved diagnostics, aggressive therapy (combining amphotericin, other antifungal / amoebicidal drugs, sometimes miltefosine), supportive care, there have been occasional survivors.

Recent Incidences in Kerala, India (2025)

In 2025, Kerala has witnessed a concerning rise in cases of amoebic meningoencephalitis, the rare but deadly brain infection often associated with contaminated water. As of mid-September, the state has recorded 67 confirmed cases with 18 deaths.  Among the victims is a 17-year-old student from Poovar, Thiruvananthapuram, who likely contracted the infection after swimming in a pool at Akkulam Tourist Village, which has since been sealed and its water sampled for testing.  Health authorities have also reported fatalities in Kozhikode, Malappuram, Wayanad and other districts, including both children and adults, some of whom had no obvious exposure to outdoor water bodies.  In response, the Kerala government has launched the “Water is Life” campaign, intensifying chlorination of wells and water tanks, restricting unsafe water use, and raising public awareness to prevent further spread. 

Why is This a Growing Concern?

Environmental changes: Rising temperatures, changing rainfall patterns, stagnation of water, heat waves all favor the growth of amoebae. Reports suggest that free-flowing water and dust are also becoming involved, meaning risk exposures are diversifying.  Better detection & awareness: Before, many cases may have been misdiagnosed or detected too late. Now with protocols, lab capacity, health-department guidelines, more cases being reported. Earlier diagnosis seems to be improving survival. 

Public activities: Swimming, bathing in natural or poorly maintained water bodies or pools, use of wells or storage tanks with poor water sanitation are recurring exposure points. 

Preventive Measures & Recommendations

Given what is known, here are strategies for prevention, early detection, and management:

Public Awareness : Educate people not to swim in unclean, stagnant, or warm freshwater lakes, ponds, poorly maintained pools. Avoid splashing or letting water enter the nose (e.g., submerging head) when in unsafe water. Water Safety & Sanitation Proper chlorination of water bodies used for swimming. Regular cleaning of wells, water storage tanks, domestic water systems. Ensuring public swimming pools maintain required water treatment standards, and documentation of maintenance is transparent.

Infrastructure & Monitoring : Strengthen lab diagnostics (PCR, molecular labs) to detect amoebae promptly.

Water sample testing : For amoeba in water sources that people use for bathing or swimming. Surveillance systems to capture neurological cases (AES – acute encephalitis syndrome) and distinguish possible amoebic causes. Clinical Measures Physicians should consider amoebic meningoencephalitis in differential diagnosis when patients present with rapidly worsening meningoencephalitis signs, especially with history of water exposure.

Initiate treatment rapidly even if suspected since delay is often deadly. Use of combination therapy (antifungal/amoebicidal), supportive intensive care. Follow state / national technical guidelines (as in Kerala).

Policy & Government Action : Issuing and enforcing technical treatment & preventive guidelines at state and national levels. Funding for research into amoeba behavior, strain diversity, environmental persistence, and more effective treatments. Coordinated efforts between health, environment, water supply, irrigation, local government to manage risk comprehensively.

Conclusion

Amoebic meningoencephalitis remains rare, but the recent surge of cases in Kerala underscores how even rare diseases can become public health alarms, especially if environmental and infrastructural factors align. Early detection, strong public health infrastructure, and community awareness are vital to reduce fatalities. While we may not be able to prevent every case, there is growing evidence that smart interventions do save lives.

Vitamin B12: The Essential Nutrient for a Healthy Life

by Maneesh Sharma, posted in Blog

Vitamin B12, also known as cobalamin, is a vital water-soluble vitamin that plays a crucial role in maintaining nerve function, producing red blood cells, and supporting DNA synthesis. Despite its importance, B12 deficiency is quite common, particularly among vegetarians, vegans, and older adults. A lack of this essential nutrient can lead to fatigue, weakness, neurological issues, and even cognitive decline. Ensuring an adequate intake of vitamin B12 is key to maintaining overall health and well-being.

One of the primary functions of vitamin B12 is aiding in red blood cell formation, preventing megaloblastic anemia, which can cause severe tiredness and weakness. It also plays a significant role in maintaining a healthy nervous system by protecting the myelin sheath around nerve fibers. Additionally, B12 contributes to DNA synthesis, making it essential for cell growth and repair. Furthermore, it helps regulate homocysteine levels in the blood, reducing the risk of heart disease. Since B12 is involved in converting food into energy, its deficiency can lead to persistent fatigue and low energy levels.

Vitamin B12 is primarily found in animal-based foods such as meat, poultry, seafood, dairy products, and eggs. Fortified foods like plant-based milk, cereals, and nutritional yeast are good alternatives for vegetarians and vegans. Since plant-based foods do not naturally contain B12, individuals following a vegetarian or vegan diet must rely on fortified foods or supplements to meet their daily requirements.

A deficiency in vitamin B12 can cause various symptoms, including numbness or tingling in the hands and feet, difficulty concentrating, memory problems, mood changes, and even pale or jaundiced skin. In severe cases, prolonged deficiency may lead to neurological damage and irreversible cognitive impairment. Certain groups are at a higher risk of B12 deficiency, including older adults, individuals with digestive disorders like Crohn’s disease or celiac disease, and those taking certain medications, such as long-term antacids or metformin.

To maintain optimal vitamin B12 levels, it is important to consume a balanced diet rich in B12 sources. For those who cannot get enough from food, supplements or B12 injections may be necessary, especially for individuals with absorption issues. Regular checkups and blood tests can help detect a deficiency early and prevent potential health complications. Since vitamin B12 is essential for energy production, neurological function, and cardiovascular health, ensuring adequate intake is crucial for overall well-being. If you experience any symptoms of deficiency, consulting a healthcare professional for proper diagnosis and treatment is highly recommended.