The global challenge of HIV/AIDS remains one of the most pressing public health issues today. According to the latest data from UNAIDS, around 38.4 million people worldwide are living with HIV/AIDS, underlining the need for not only medical intervention but also comprehensive awareness, education, and social change. Despite the significant strides made in treatment and prevention, the confusion surrounding the relationship between HIV and AIDS still persists.

Young people have become influential advocates in the fight against HIV/AIDS. Research from UNICEF shows that youth-led initiatives can lower HIV transmission rates by as much as 45% in targeted communities. These young activists utilize digital platforms and peer-to-peer education to dispel myths, promote safe practices, and foster supportive environments for those affected by HIV/AIDS.

Dr Gowri Kulkarni, an expert in Internal Medicine, explains that while the terms HIV and AIDS are often used interchangeably, they are distinctly different. "HIV (Human Immunodeficiency Virus) is a virus that attacks the immune system, whereas AIDS (Acquired Immunodeficiency Syndrome) is a condition that occurs when HIV severely damages the immune system," she clarifies. To understand the implications of these differences, it's important to explore the fundamental distinctions between the two.

1. HIV is a Virus; AIDS is a Syndrome

HIV is the virus responsible for attacking the body’s immune system, specifically targeting CD4 cells, which are crucial for the body’s defense against infections. As HIV progresses, it destroys these cells, weakening the immune system over time. If left untreated, this continuous damage can lead to AIDS.

AIDS, on the other hand, is a syndrome, not a virus. Dr Kulkarni further elaborates that AIDS is a collection of symptoms and illnesses that emerge when the immune system is severely compromised due to prolonged HIV infection. It represents the most advanced stage of HIV, and is characterized by very low CD4 counts or the onset of opportunistic infections like tuberculosis, pneumonia, or certain cancers.

2. Not Everyone with HIV Develops AIDS

A key distinction to remember is that not everyone with HIV will progress to AIDS. Thanks to advancements in medicine, particularly antiretroviral therapy (ART), individuals living with HIV can manage the virus and maintain a healthy immune system for many years, or even decades, without ever developing AIDS. ART works by suppressing the virus to undetectable levels, effectively preventing the damage HIV would otherwise cause to the immune system.

Without treatment, however, HIV progresses through three stages:

- Acute HIV Infection: This stage occurs shortly after transmission and may include symptoms like fever, fatigue, and swollen lymph nodes.

- Chronic HIV Infection: Often asymptomatic or mildly symptomatic, the virus continues to damage the immune system but at a slower rate.

- AIDS: This is the final stage, marked by severe immune damage and the presence of infections that take advantage of the compromised immune defenses.

3. HIV is Transmissible; AIDS is Not

Another key distinction between HIV and AIDS is the way in which they are transmitted. HIV is highly contagious and can be transmitted through the exchange of bodily fluids such as blood, semen, vaginal fluids, and breast milk. It is primarily spread through unprotected sexual contact, sharing needles, or from mother to child during childbirth or breastfeeding.

AIDS, however, is not transmissible. It is not a disease that can be passed from one person to another. Rather, AIDS is the result of untreated, advanced HIV infection and is a direct consequence of the virus’s damage to the immune system.

4. Diagnosis Methods Differ

HIV and AIDS are diagnosed through different methods. HIV is diagnosed through blood tests or oral swabs that detect the presence of the virus or antibodies produced by the immune system in response to the virus. Early detection of HIV is crucial, as it allows for timely intervention and treatment, which can prevent the virus from progressing to AIDS.

AIDS, on the other hand, is diagnosed using more specific criteria. Dr Kulkarni notes that the diagnosis of AIDS is made when the individual’s CD4 cell count falls below 200 cells/mm³, or when opportunistic infections or certain cancers (such as Kaposi's sarcoma or lymphoma) are detected. Diagnosing AIDS involves a more thorough assessment of the individual’s immune function and overall health, as opposed to just the detection of HIV.

5. Treatment Goals Are Different

The treatment goals for HIV and AIDS differ significantly, although both involve antiretroviral therapy (ART). For HIV, the primary treatment goal is to suppress the virus to undetectable levels, thus maintaining a strong immune system and preventing further transmission of the virus. People living with HIV can often live long, healthy lives if they adhere to ART.

For individuals diagnosed with AIDS, the treatment plan becomes more complex. While ART remains an essential part of managing the virus, treatment for AIDS also focuses on addressing the opportunistic infections and secondary health complications associated with severe immune suppression. The goal of treatment for AIDS is not only to manage the HIV virus but also to improve the quality of life and extend survival by treating these secondary health issues.

Role of Community Engagement in Combatting HIV/AIDS

While the medical community has made great strides in managing HIV, the battle to curb its transmission is also a social and cultural issue. Dr Daman Ahuja, a public health expert, highlights that HIV/AIDS awareness and education are vital to reducing transmission rates and supporting those affected by the virus. "Young people, especially, have become key advocates in the fight against HIV/AIDS," says Dr Ahuja. "Research from UNICEF shows that youth-led initiatives can lower HIV transmission rates by as much as 45% in targeted communities."

Additionally, grassroots activism plays a significant role in raising awareness and addressing stigma. As the World Health Organization reports, community-based interventions have been proven to increase HIV testing rates and improve treatment adherence, which are crucial in the fight against the pandemic.

The ultimate goal of organizations like UNAIDS is to eliminate the HIV/AIDS pandemic by 2030. Achieving this requires global collaboration, from medical treatment advancements to public health strategies, education, and advocacy. Dr Kulkarni’s insight underscores the importance of early detection, treatment adherence, and community support in the fight against HIV/AIDS.

Dr Gowri Kulkarni is Head of Medical Operations at MediBuddy and Dr Daman Ahuja, a public health expert and has been associated with Red Ribbon Express Project of NACO between 2007-12.

Oral cancer cases are on the rise because of tobacco chewing, smoking, alcohol consumption, poor oral hygiene, and delayed medical attention. Many people ignore small red or white patches, which are early warning signs of cancer and should never be overlooked. There is an average delay of six months in cancer diagnosis, which is the reason patients are diagnosed with stage 3 and 4 cancers.

Dr Prathamesh Pai, Senior Consultant Head and Neck Surgical Oncologist, Gleneagles Hospital, Parel, Mumbai, explained the difference between red and white patches in the mouth and what they may indicate about your health.

Red vs White Patches in the Mouth

White patches inside the mouth are called leukoplakia, while red patches are known as erythroplakia. Both can occur on the tongue, gums, inner cheeks, or floor of the mouth. Though both need equal attention, red patches are more dangerous, with a higher risk of being cancerous in comparison to white patches. Red patches in the mouth indicate severe abnormal cellular changes, which can develop into precancerous conditions or cancer. Around 60% to 80% of erythroplakias are diagnosed as early-stage cancer on biopsy.

What is erythroplakia?

Erythroplakia is a fiery red, well-defined patch in the mouth. These lesions are velvety in appearance. They often appear on the floor of the mouth or the retromolar trigone (the area behind the wisdom teeth). Red patches often go unreported, as they are mistaken for traumatic mouth ulcers caused by hard foods or dental irritation.

If a red patch does not heal within two to three weeks, it should raise concerns about cancer. Besides the duration, patches that bleed on touch, are painful while eating, are associated with a burning sensation, difficulty swallowing, loosening of teeth, or voice changes should be investigated. Tobacco users should be even more mindful. Ignoring persistent red or white patches can allow the disease to progress silently.

So, make sure to seek immediate help and consult a doctor. For anyone presenting with red or white patches, the doctor will carry out a physical oral examination and a biopsy, in which a small tissue sample is taken from the patch for evaluation. A CT scan and MRI may also be advised, depending on the location of the patch and other clinical features.

Why early detection of cancer matters

Remember, early detection of cancer is curable. Treatment is also less extensive, often involving minor intraoral surgery and preservation of speech and swallowing functions. As the cancer stage advances, surgery may require the removal of parts of the cheek, jaw, or tongue, as well as postoperative radiotherapy. This affects the face and neck and hampers important functions such as eating, speaking, and swallowing. This has major implications for quality of life. Treatment can also be a financial burden, especially for younger patients.

Take charge of your life. Lead a happy, healthy life. Avoid tobacco, alcohol, and other addictions. Visit your dentist regularly and maintain good oral hygiene. Prevention is better than cure. In the case of any non-healing ulcers in the mouth, swelling in the neck, altered speech or swallowing, or altered bowel habits for more than two weeks despite treatment, do visit a doctor. Remember, early detection of cancer is curable.

New Delhi's weather is fluctuating sharply, with Western Disturbances driving bouts of intense heat and sudden pre-monsoon showers. The city is currently hovering in the mid-30s°C but is also bracing for a return to scorching heat, with maximum temperatures forecast to climb into the low to mid-40s°C this week.

Such weather fluctuations can play a significant role in triggering migraine attacks, said Dr. Vivek Kumar, Principal Director - Neurology, Max Super Speciality Hospital, Patparganj.

Weather Factors That Can Trigger Migraines

Speaking to HealthandMe, Dr. Vivek noted that many components of weather are reported to affect migraine. These include:

• Barometric pressure
• Humidity
• Temperature
• Seasons

Dr. Kumar explained that a drop in atmospheric pressure, often seen before storms, can create a pressure imbalance between the environment and the sinuses or inner ear, stimulating nerves and leading to headaches.

"Rapid temperature changes, as well as exposure to extreme heat or cold, can also trigger migraine episodes," he said.

Similarly, both high humidity and very dry air have been associated with the onset of migraine symptoms. Bright sunlight and intense sun exposure, particularly when reflected off surfaces such as snow or water, are also recognized migraine triggers.

Also read: Global Temperatures Likely To Stay Near Record Levels For Next Five Years: WMO

How Does The Weather Trigger Migraines?

According to Dr. Kumar, weather changes can affect brain chemistry by influencing serotonin levels, a neurotransmitter involved in migraine development. They may also contribute to inflammation or pressure differences within the sinuses.

Further, the expert noted that seasonal transitions can be particularly challenging.

"Spring and summer may trigger migraines because of heat and allergens, while winter's cold and dry air can also contribute to headaches and sinus discomfort," he said.

Notably, weather is often only one factor among several. Allergies during spring or viral illnesses during autumn may also combine with environmental changes to trigger headaches, Dr. Kumar stressed.

Migraine Vs Sinus Headache

Read More: What Can You Learn About Your Health From Ice Cream Headaches?

Migraine is also frequently mistaken for a sinus headache because the symptoms often overlap.

Dr. Kumar noted that migraine attacks can cause forehead and facial pressure, as well as nasal congestion or a runny nose. Unlike migraine, however, sinus infections may be accompanied by fever.

He explained that migraine can activate nerves in the face, a phenomenon known as cranial autonomic activation, which can create sensations of nasal blockage and congestion.

While weather changes are difficult to avoid, monitoring weather forecasts may help people prepare for potential triggers. Preventive treatment may also reduce sensitivity to environmental changes and allow greater freedom in daily activities.

Tips To Prevent Migraine

Dr. Kumar advised:

• Keeping a migraine diary for at least 90 days to help identify specific weather-related patterns associated with attacks.
• Treating migraine attacks early when weather-related triggers are suspected. Early treatment can shorten the duration of an attack and prevent symptoms from becoming severe.
• Maintaining adequate hydration, particularly during hot weather or physical activity. Carrying water when outdoors can help compensate for fluid loss through sweating.
• For those sensitive to bright sunlight, staying indoors during peak daylight hours may be beneficial. When outdoor exposure is unavoidable, protective sunglasses or hats can help reduce glare and light sensitivity.

Pancreatic cancer is one of the most feared diseases, and it causes thousands of lives to be wasted away due to this fatal disease. According to the Population-Based Cancer Registries (PBCRs) managed by the Indian Council of Medical Research (ICMR) and the IARC Global Cancer Observatory (GLOBOCAN), about 22,982 Indians have pancreatic cancer every year.

On the other hand, the American Cancer Society's US SEER Pancreatic Cancer Stat Facts shows the annual number of cases is 67,530. Thus, any lead to resisting cancer is good news for the world. Recently, a research team from Stony Brook Medicine and Luisa Escobar-Hoyos of Yale School of Medicine, led by Kenneth Shroyer and Natalia Marchenko, found an important fact to fight the fatal disease.

The study investigated the role of Keratin 17 (K17) and found that the protein can be a driver of chemoresistance to gemcitabine. It is often used to treat various types of cancer. The study shows that the K17 can act as a target for the development of novel treatments.

They discovered that the protein is a key driver of chemoresistance to gemcitabine, an agent used to treat a wide range of cancers, including advanced tumors of the pancreas, lungs, and breast.

How New Pancreatic Cancer Drug Daxorrasib Can Help You?

Daxaronrasib is a daily oral pill that has demonstrated statistically significant and clinically meaningful improvements in progression-free survival (PFS) and overall survival (OS) compared with standard intravenous chemotherapy.

Described as a multi-selective inhibitor of RAS(ON) proteins, it is the first investigational drug in a new class of RAS inhibitors designed to target a broad spectrum of cancer-causing RAS mutations.

The drug works by blocking KRAS signalling proteins that drive tumor growth.

Read More: New Pancreatic Cancer Drug Daxaronrasib May Benefit Patients With Lung And Ovarian Tumors Too

Daraxonrasib is the first drug. It works by pairing up with a protein called cyclophilin A inside cells, acting like a molecular glue, glomming onto the mutated protein.

Pancreatic cancer is considered one of the most RAS-dependent cancers, with more than 90 per cent of patients carrying tumours driven by RAS protein mutations. Similar RAS-targeting drugs are also being developed for pancreatic, lung, and colon cancers.

The findings were presented at a plenary session of the American Society of Clinical Oncology’s meeting in Chicago on May 31 and simultaneously published in the New England Journal of Medicine.