Heart disease is often linked to high cholesterol, obesity, or lack of exercise. However, there is mounting evidence that suggests that mental health plays a crucial role in cardiovascular well-being. Stress, anxiety, and depression can silently strain the heart, increasing the risk of serious complications.

A recent study, published in Nature Human Behaviour, showed that loneliness has a significant impact on proteins present in a person's blood. For the study, researchers used data from more than 42,000 participants to explore whether the 9.3% who reported social isolation and 6.4% who reported loneliness had different levels of proteins in their blood compared with those who did not. The researchers then studied data that tracked the health of participants over an average 14-year period.

"We found around 90% of these proteins are linked to the risk of mortality," Dr Chun Shen, Fudan University in China, who is also the lead researcher said. "In addition, about 50% of the proteins were linked to cardiovascular disease, type 2 diabetes and stroke," he added.

Dr Shrey Kumar Srivastav, senior consultant at Sharda Hospital, said that subtle symptoms of heart disease, such as fatigue, shortness of breath, swelling in the lower legs, dizziness, and jaw pain, are often overlooked or attributed to stress and ageing. "Women, in particular, may experience atypical signs like extreme fatigue, indigestion, or upper abdominal pain instead of classic chest pain, leading to delayed diagnosis," he added.

Can Mental Health Issues Trigger Heart Diseases?

Chronic stress can trigger harmful cardiovascular effects, including elevated blood pressure, increased heart rate, and inflammation—key contributors to heart disease. Anxiety and depression further impact heart health by disrupting sleep patterns, raising stress hormone levels, and encouraging unhealthy habits like poor diet and inactivity.

Mental health issues like depression and anxiety have a profound impact on the heart. They don’t just affect emotions but can increase inflammation and put extra strain on the cardiovascular system, warns Dr Srivastav.

Certain risk factors, such as obesity and diabetes, disproportionately affect women, making them more vulnerable to heart failure with preserved ejection fraction (HFpEF). However, due to gender-specific symptom variations, heart disease in women often goes undiagnosed for longer.

Obesity is more prevalent in women than men and is a major risk factor for heart failure. Diabetes, too, has a greater impact on women’s heart health, yet diagnosis and treatment delays are common. Addressing this gap requires increasing awareness, training healthcare providers, and promoting early diagnostic tools,” explains Dr Srivastav.

How Can You Protect Your Heart?

A simple yet effective way to support heart health is by committing to a brisk 30-minute walk daily. Walking not only helps regulate blood pressure and manage weight but also improves circulation and reduces stress.

"Regular physical activity, paired with a heart-healthy diet rich in fruits, vegetables, whole grains, and lean proteins, significantly lowers cardiovascular risks," advises Dr Srivastav.

Heart disease can often go undetected until a major event occurs, making routine screenings essential.

- For women: Begin screenings around age 30 and continue with regular checkups.

- For men: Start screenings at age 35.

Health screenings, including blood pressure checks, cholesterol tests, and electrocardiograms (ECGs), are critical for early detection of silent heart conditions.

The health authorities in New York City are currently investigating an outbreak of Legionnaires' disease after at least 14 people were diagnosed with the potentially life-threatening respiratory illness across two neighborhoods in Manhattan. The recent outbreak prompted an urgent public health response.

Legionnaires' Disease Outbreak IN NYC

The outbreak, initially marked with just two cases earlier this week, has grown rapidly. Cases of infections were reported in Carnegie Hill and Yorkville on the Upper East Side.

The New York City Department of Health has immediately launched an investigation to identify the source of the outbreak and is inspecting cooling towers and other water systems in the affected areas, where the Legionella bacteria commonly thrive.

Authorities have urged residents and visitors who were in the neighborhoods in recent days to seek medical attention if they face symptoms like fever, cough or difficulty breathing.

What is Legionnaires' Disease?

The bacteria naturally occur in freshwater environments but can multiply in man-made water systems that are poorly maintained, including:

• Cooling towers used for large air-conditioning systems

• Hot tubs and spas

• Public fountains

• Large plumbing systems

• Water tanks and heaters

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Symptoms:

Symptoms of Legionnaire's disease appear 2 to 14 days after exposure, although they can sometimes take longer. The common symptoms of Legionnaires' disease include:

• High fever

• Persistent cough

• Shortness of breath

• Chills

• Muscle aches

• Headache

Some patients, particularly older adults, may also develop nausea, vomiting, diarrhea or confusion. As the illness closely resembles other forms of pneumonia, laboratory testing is usually required to confirm the diagnosis.

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Treatment & Prevention

Legionnaires' disease is treatable with antibiotics, and early diagnosis greatly improves recovery. However, delayed treatment can lead to severe complications such as respiratory failure, septic shock, or multi-organ failure.

The disease can be fatal, especially among older adults and people with underlying health conditions.

While the overall fatality rate is around 10% in otherwise healthy individuals, it can be considerably higher in vulnerable patients if treatment is delayed.

Although most people are unlikely to be exposed, experts recommend:

• Seeking immediate medical care for pneumonia-like symptoms, particularly if you are in a high-risk group.

• Ensuring building water systems, cooling towers, and hot tubs are properly maintained.

• Avoiding smoking as it increases susceptibility to the severe disease.

• Following public health advisories during ongoing outbreak investigations.

What Should You Do If You're Infected?

If you feel ill and experience the symptoms of Legionnaire's, watch for signs, especially respiratory distress, fever, or extreme tiredness. Health officials recommend the following:

• Contact your healthcare provider immediately if symptoms appear

• Inform them of your recent travel to potentially affected areas

• Get tested if symptoms suggest pneumonia or related complications

Health Officials Act On Outbreak Control

New York City health officials are testing cooling towers and other potential environmental sources in the affected neighborhoods to identify where the bacteria may have originated. Property owners are immediately required to disinfect contaminated cooling towers if Legionella is detected.

Officials have emphasized that residents can continue using home air conditioners and public cooling centers, as these systems do not typically spread the bacteria in the same way as large industrial cooling towers.

The Maharashtra Food and Drug Administration (FDA) recently banned the sale, distribution, and use of several fairness creams after dangerous levels of toxic heavy metals, including lead and mercury, were found in the products.

About The Case

Among the products, one named Goree Beauty Cream is of Pakistani origin. The product was reportedly being sold unlawfully in the state.

The FDA labelled the products “Not of Standard Quality” (NSQ), warning consumers against using them as prolonged exposure to heavy metals present in the products can lead to serious health complications associated with skin, kidneys as well as the nervous system.

According to the Maharashtra FDA, the following cosmetic products have been declared unsafe:

1. Goree Beauty Cream
2. Face Fresh Gold
3. Golden Star Beauty Cream

Officials also noted that the products lacked mandatory information like the manufacturer's complete details, batch number, manufacturing date, and expiry date, raising concerns over their authenticity and safety.

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What Happens When One Gets Exposed To Lead And Mercury?

If used repeatedly, these toxic substances may be absorbed through the skin, allowing them to accumulate in the body over time.

Excessive exposure to mercury can cause:

• Kidney damage

• Tremors and muscle weakness

• Numbness or tingling sensations

• Memory problems and difficulty concentrating

• Mood changes and irritability

• Skin rashes and discoloration

• Harm to unborn babies during pregnancy

The risk increases with prolonged use, particularly when the products are used on a daily basis over months or years.

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On the other hand, lead exposure can cause:

• Damage to the nervous system

• High blood pressure

• Kidney dysfunction

• Fertility problems

• Developmental delays in children

• Pregnancy complications

Even if lead accumulates in the body in small amounts, its repeated use may pose long-term health risks.

Why Are Lead And Mercury Found In Fairness Creams?

Sometimes, mercury is illegally added to skin-lightening products as it suppresses melanin production, temporarily making the skin appear lighter. However, this skin-lightening effect comes at the cost of significant health risks.

Lead may contaminate cosmetic products through poor-quality raw materials or unsafe manufacturing processes. Neither ingredient should be intentionally present in cosmetic creams sold for routine use.

International health agencies have repeatedly warned against skin-lightening creams containing mercury.

In June 2026, the US FDA again cautioned consumers not to use over-the-counter skin-lightening products found to contain mercury or hydroquinone because of the risk of kidney injury, neurological damage, and permanent skin problems.

The Maharashtra FDA's crackdown highlights the hidden dangers of unregulated and illegal fairness creams that contain harmful ingredients.

While these products may promise lighter skin, the presence of toxic heavy metals such as mercury and lead can expose users to potentially irreversible health damage. Consumers are advised to read the labels carefully before purchasing any skincare products that promise complexion-altering effects.

Usually, the most telling symptoms of Alzheimer's disease surface in old age. With no cure and limited ways to detect it early, it is challenging to treat and manage Alzheimer's. However, a recent study says that a new blood test can help in diagnosing Alzheimer's early.

New Blood Test May Predict Alzheimer's Symptoms Early

A new blood test that measures tiny loops of genetic material in the bloodstream may be able to predict when Alzheimer's disease symptoms are likely to appear, offering hope for earlier intervention of the neurodegenerative disease and more effective clinical trials.

A study funded by the U.S. National Institutes of Health (NIH) says that a specific group of blood-based biomarkers known as circular RNAs could help identify people who are on the brink of developing Alzheimer's symptoms, even before memory loss or cognitive decline becomes apparent.

An Improvement On Current Blood Tests

The current blood tests for Alzheimer's have been made after significant progress in recent years, particularly by detecting proteins linked to amyloid plaques, one of the disease's primary characteristics features.

However, these tests may present positive results for many years, even decades, before symptoms like declining memory and thinking appear. It makes it difficult for doctors to predict when the disease will actually begin affecting the patient’s quality of life.

The newly developed blood test could fill that existing gap. Scientists found that elevated levels of a set of 34 circular RNAs in blood were strongly associated with future symptoms of the onset.

According to the study, those with higher circRNA levels were nearly three times more likely to develop Alzheimer's symptoms compared with those with lower levels.

The changes appeared approximately two to four years before symptoms emerged, making them a valuable diagnostic test for predicting disease progression.

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How Can This Blood Test Help?

Improve Clinical Testing

The discovery could transform existing Alzheimer's research by helping scientists identify participants who are most likely to develop symptoms during a clinical trial.

Finding out when symptoms are likely to begin would allow researchers to introduce preventive therapies at the stage when they are most likely to be effective and better evaluate whether experimental treatments can delay cognitive decline.

Less Invasive Alternative

The current methods to assess Alzheimer's include PET brain scans, which are expensive and not widely available. Lumbar punctures (spinal taps), an invasive method, is also used.

Compared to the existing methods to screen Alzheimer's, a blood test is easier to perform, less invasive, more affordable and more accessible, especially if validated for widespread clinical use.

Earlier Planning For Patients And Families

If doctors can ascertain the symptoms early, patients and their families can, patients’ families can plan future care and support. They can use the time to make financial and legal decisions while the person is still cognitively healthy. Patients can also adopt lifestyle changes that may help maintain brain health.

Researchers however stressed that the new circRNA test is still in the research stage and requires further validation in larger and more diverse populations before it can be adopted in clinical practice.