The COVID-19 pandemic may be over, but our immune systems are still feeling the impact. After years of battling constant viral threats, from COVID-19 to seasonal flu and other infections, our body’s defense system is exhausted. Many people continue to experience lingering inflammation, frequent illnesses, and slower recovery times. This extended state of immune stress has compromised us further to chronic illness, including autoimmune diseases and even neurodegenerative diseases such as Parkinson's. So why is our immune system still in trouble? And how do we give it its power back? Understanding immune exhaustion is the beginning of rebuilding our body's natural immunity.

A weakened immune system makes people more susceptible to disease, mental illnesses, and even sleep disorders. Now, new research indicates that immune system depletion may play an important role in the onset of Parkinson's disease, a degenerative neurologic disorder that compromises movement and cognition.

Role of Inflammation in Parkinson's Disease

Dysfunctional immune response is a leading cause of long-standing inflammation within the body, that has been found to contribute towards a multitude of conditions, including cardiovascular conditions, diabetes, depression, and neurodegenerative diseases such as Alzheimer's.

As people age, their immune system naturally becomes less effective. This deterioration, referred to as immune exhaustion, may be a key contributor to the onset and progression of Parkinson’s disease. Rebecca Wallings, a Parkinson’s Foundation Launch Award grant recipient and senior postdoctoral fellow at the University of Florida, believes that an accumulation of exhausted immune cells could be driving neurodegeneration in Parkinson’s patients.

How a Tired Immune System Might Affect Parkinson's?

Parkinson's disease is most commonly linked with the degeneration and loss of dopaminergic neurons—motor nerve cells that produce dopamine, an essential neurotransmitter for movement. While researchers have long suspected inflammation is involved in this neurodegeneration, the mechanisms are not yet well understood.

Wallings' study is on immune cell exhaustion, a process by which aging immune cells fail to control immune responses effectively. Her research indicates that instead of dampening inflammation in Parkinson's patients, attempts should be made to rejuvenate the immune system to regain its functionality.

Energy Deficiency in Immune Cells

One of the major findings of Wallings' work is the function of mitochondrial impairment in immune cell exhaustion. Mitochondria are commonly called the powerhouses of cells, as they are vital for generating energy. As mitochondria age and become inefficient, immune cells fail to function well, potentially accelerating neurodegeneration in Parkinson's disease.

Wallings has found that mutations in the LRRK2 gene, a recognized genetic risk factor for Parkinson's disease, are linked with defective mitochondrial function and immune cell exhaustion. Her current work includes testing various therapeutic approaches to restore mitochondrial function in immune cells with the potential to enhance the immune system and potentially prevent or treat Parkinson's disease.

Will Rejuvenating the Immune System Help in Treatment?

For decades, the standard practice in treating Parkinson's has been to suppress brain inflammation. Yet Wallings' work indicates that instead of slowing down immune responses, restoring the immune system could be a more successful strategy. By addressing mitochondrial impairment and immune resilience, researchers can potentially reverse or slow down Parkinson's disease.

Wallings is now looking into how to rejuvenate immune cells by fixing mitochondria. She studies immune cells from patients with Parkinson's as well as from healthy subjects and performs experiments on animal models to determine if rejuvenation of the immune system could result in improved disease outcomes.

Lifestyle Factors That May Affect Parkinson's Risk

While there is no cure for Parkinson's disease, some lifestyle adjustments may decrease the chances of developing the illness. Since neurodegenerative diseases are associated with chronic inflammation and immune dysfunction, developing habits that enhance immune function might prove helpful.

Diet: There is evidence to suggest that eating in accordance with the Mediterranean or MIND diets, both high in antioxidants, healthy fats, and anti-inflammatory foods, can encourage brain wellness and reduce Parkinson's risk.

Avoiding Dangerous Substances: Restricting alcohol and nicotine use can maintain a robust immune system and suppress inflammation.

Reducing Stress: Chronic stress weakens immune function, so methods such as meditation, exercise, and sufficient sleep can lead to improved overall well-being.

When one hears about plastic surgery, he or she usually associates it with beauty operations designed to improve one's appearance.

Reconstructive plastic surgery is a very particular field of medicine that addresses problems with the restoration of patients' form and functions who suffer from trauma, cancer, birth defects, burns, and complicated wounds. For many people, reconstructive surgery is far from beautification. It is all about getting back to an independent life.

Reconstructive Surgery After Trauma and Cancer

Injuries that can occur following accidents on the road, incidents at industries, electric burns, and animal bites often lead to severe destruction to the skin, muscles, tendons, nerves, blood vessels, and bones. In addition, cancers of the breast, head and neck, mouth, skin, and limb regions are often treated with extensive surgical excisions to provide complete clearance from the disease.

Though these operations are necessary to save lives, they might lead to considerable impairment and deformities in the patients. Reconstructive plastic surgery helps solve these problems.

Advanced Techniques in Modern Reconstruction

Today's reconstruction surgery uses sophisticated methods, including microsurgical free tissue transfer, perforator flaps, local and regional flap reconstruction, split-thickness and full-thickness skin grafting, nerve grafting, tendon reconstruction, and vascular anastomosis.

The application of microsurgery, in particular, has greatly improved the possibilities for performing reconstruction surgeries through transferring viable tissue from one region of the body to another with the re-establishment of blood supply from blood vessels of just one to three millimeters in diameter using a surgical microscope.

Restoring Function After Cancer Surgery

One of the biggest breakthroughs in the field of reconstructive surgery has been in the area of post-cancer treatment. Women who have undergone surgery due to breast cancer have the option to undergo either immediate or delayed breast reconstruction surgery through implants or through autologous tissues to help restore their self-image and mental well-being.

Similarly, patients who have undergone surgery due to oral, jaw, or facial cancer can improve their functionality and social standing through microvascular surgery.

Burn Reconstruction and Functional Recovery

The other significant factor to consider is the importance of reconstructive surgery in the treatment of burns. Severe burns typically lead to contracture scars and limited movement of joints.

Excision, skin grafting, flaps, and scar revision surgeries are key in improving function, aesthetics, and reducing disability. Reconstruction of hands following injuries or burns allows people to carry out their daily tasks and work.

Restoring Hope Beyond Surgery

Reconstruction is not limited to the surgical theater but is best done using a multi-disciplinary team comprising plastic surgeons, oncologists, trauma surgeons, physiotherapists, occupational therapists, psychologists, dietitians, and rehabilitators. Rehabilitation, scar management, physiotherapy, and follow-up are just as important after surgery as the surgery itself.

Reconstructive plastic surgery is thus much more than a field of surgery; it is a specialty whose goal is to restore hope. Through a blend of surgical skills and compassion, it gives people an opportunity to transcend the physical and psychological effects of injuries or cancers. For many people, it changes the experience of survival into that of recovery.

With the onset of the monsoon, the risk of several water-borne, mosquito-borne, and bacterial infections increases significantly due to stagnant water, flooding, poor sanitation, and contaminated food and water.

Many of these diseases can start with mild symptoms similar to the flu, but if they're diagnosed early, you can get the appropriate medical care in time, avoiding serious complications.

Early Symptoms Of Various Monsoon Diseases

One of the important ways to prevent monsoon infections and diseases is to identify warning signs early, Dr. Amit Saraf, Director, Department of Internal Medicine, Jupiter Hospital, told HealthandMe.

Leptospirosis

Leptospirosis gained attention after its cases surged in Kerala recently. The infection has also been reported in Maharashtra, Gujarat, Tamil Nadu, and Karnataka. The bacterial infection typically spreads via contact with water or soil that has been contaminated by the urine of animals infected with leptospirosis, especially during floods.

Initial signs and symptoms include:

• High fever

• Chills

• Intense muscle pain (especially in calves)

• Headache

• Red eyes

• Nausea

• Vomiting

“Wearing protective footwear, avoiding wading in floodwaters, and covering any open wounds will help minimize the risk of infection,” Dr Saraf recommended.

Typhoid

• High fever

• Headache

• Weakness

• Loss of appetite,

• Abdominal pain

• Constipation or diarrhea

• Body aches

Dr. Saraf said: “It can cause serious gastrointestinal issues if not treated. Safe drinking water, good hand hygiene, and freshly cooked food are important preventive measures.”

Cholera

Cholera is a water-borne bacterial disease that commonly occurs during monsoons. It often begins with excessive watery stools, vomiting, leg cramps, and rapid dehydration. Dehydration can quickly become an immediate danger of cholera.

The doctor said: “Prevention includes drinking clean water, eating hygienically prepared food, and practicing proper sanitation and handwashing.”

Dengue

Dengue is one of the most common viral diseases spread by Aedes mosquitoes. Often reported in various Indian states during the monsoon, dengue presents with flu-like symptoms. Dengue usually begins with high fever, severe headache, pain behind the eyes, extreme muscle and joint pain, nausea, skin rash, and fatigue.

Malaria

Malaria, a common monsoon disease, is spread by infected mosquitoes and characterized by the following symptoms:

• Recurrent fever

• Shivering or sweats

• Headache

• Muscle pain

• Weakness

• Nausea

• Vomiting

Dr Saraf said, “Early diagnosis is important to prevent severe diseases. The best ways of preventing mosquito bites are by using mosquito repellents, mosquito nets, and the elimination of breeding sites.”

Chikungunya

Mosquito-borne viral diseases are reported to be the highest during the rainy season. One of them is Chikungunya. The infection is usually marked by sudden high fever and severe joint pain in the limbs. Other early symptoms may include headache, muscle pain, fatigue, and skin rash.

“The infection is usually not deadly but can cause joint pain for weeks or months. Preventive measures include mosquito control and avoidance of mosquito bites,” the expert advises.

Gastrointestinal Infections

During the monsoon period, gastrointestinal infections are also more common as food and water sources are more likely to get contaminated. Early signs of gut infections may include diarrhea, vomiting, cramps, nausea, bloating, fever, and dehydration.

The majority are due to bacteria, viruses, or parasites. The expert said that the risks can be minimized by maintaining food hygiene, drinking boiled or purified water, washing fruit and vegetables before cooking and consuming, and refraining from eating street foods and drinks.

Many people associate allergies with outdoor pollution, dust, or seasonal changes. However, doctors are increasingly seeing another factor contributing to allergic reactions: the indoor environment.

Allergies Worsening Even When You Stay Indoors?

Over the last two years, there has been a definite increase in patients coming in with respiratory issues. Many people who develop asthma-like symptoms later in life often ask, “Doctor, we hardly go out. How can we develop these problems?” The answer often lies in the indoor pollutants and allergens that go unnoticed in everyday life.

Most people spend nearly 90% of their time indoors — at home, in offices, malls, cars, and other climate-controlled spaces. While staying indoors may feel safer than being exposed to outdoor pollution, it can sometimes mean longer exposure to allergens trapped inside. These may trigger a runny nose, itchy eyes, cough, sinus congestion, asthma, rashes, or hives.

Many indoor irritants are invisible. Common sources include dust mites, pet dander, fungi, chemical vapours from cleaning products, air fresheners, mosquito repellents, and cooking smoke. Poor ventilation or inadequate air exchange allows these allergens to remain trapped for long periods. In many urban homes, indoor air quality can sometimes be worse than outdoor air.

Primary Indoor Irritants That Trigger Allergies

Smoke is one of the most overlooked indoor triggers. Incense sticks, dhoop, and agarbattis, which are part of daily routines in many homes, generate smoke and fine particulate matter that can irritate the airways. Cooking smoke can also be harmful, especially when food is fried, roasted, or cooked with heavy spices. Mosquito coils are another common source. In short, any form of indoor smoke can affect respiratory health, particularly in people who already have allergies or asthma.

Dust is another major concern. Many households practise dry dusting every day, but this can push dust particles back into the air and worsen symptoms in those with dust allergy or asthma. Wet mopping, wet wiping, or vacuum cleaning are safer alternatives.

Air conditioning is another factor. AC filters that are not cleaned regularly can become clogged with dust, pollen, and fungal spores, which keep circulating indoors. Closed rooms with little fresh air make this worse. If anyone in the family smokes or uses vaping products, these are well-established indoor pollutants that can significantly impact respiratory health.

Modern interiors can add to the problem. Fabric sofas, heavy curtains, carpets, and excess furniture increase the surface area where dust collects, and dust mites thrive. Plug-in mosquito repellents, strong floor cleaners, aerosol sprays, room fresheners, smoking, and vaping indoors are also important for indoor pollutants.

How To Tackle It?

Lifestyle changes after the pandemic have worsened exposure. Work-from-home routines, online classes, longer screen time, and reduced outdoor activity mean people spend more hours in closed spaces with limited fresh air.

Small steps help - open windows when outdoor air quality allows, let sunlight in, wash bed linen and curtains regularly, clean AC filters, avoid dry dusting, check damp areas for mold, reduce incense smoke, mosquito coils, and strong fragrances, and air out stored clothes before use.

Pollution remains a concern, but it is no longer the only culprit. The way we live indoors today is quietly shaping our respiratory and immune health. Recognizing these hidden triggers early can prevent allergies from becoming a long-term lifestyle problem.

By Dr Sameer Bansal, Pulmonology Respiratory Medicine Specialist, Apollo Hospitals, Bangalore