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.

After reports of two Indian nationals infected with hantavirus aboard MV Hondius cruise ship, Dr Naveen Kumar, director of the ICMR’s National Institute of Virology (NIV), said that there is "no immediate public health threat” to India.

Dr Kumar said the outbreak appears to be isolated, and that there is currently no evidence of community spread. He stressed that, unlike COVID-19, hantavirus does not spread easily between humans.

“The reported hantavirus cases appear to be isolated ones, and there is no immediate public health threat to India,” he was quoted as saying by news agency PTI.

According to the World Health Organization, the Indian passengers were among a small cluster of suspected infections identified aboard the ship, with health authorities monitoring contacts and taking precautionary measures.

Surveillance Capacity Adequate In India

Kumar said India has sufficient laboratory infrastructure to detect suspected hantavirus cases through the ICMR-NIV and the nationwide Viral Research and Diagnostic Laboratory Network.

“India has diagnostic capacity for hantavirus infection through the ICMR-National Institute of Virology and the nationwide Viral Research and Diagnostic Laboratory Network of 165 labs,” he said.

He said symptoms generally appear one to five weeks after exposure. It includes

fever,

• severe body ache,
• headache,
• fatigue,
• nausea,
• abdominal pain,
• dry cough.

2 Indians Among Crew On MV Hondius Cruise Ship

Two Indians are among 149 people aboard MV Hondius, the expedition cruise ship hit by a deadly hantavirus outbreak that has so far left three passengers dead and eight others infected, according to a BBC report.

The vessel, operated by Oceanwide Expeditions, began its journey from Ushuaia, Argentina, on April 1 and is currently travelling to Spain's Canary Islands on May 10.

According to the World Health Organization, eight people onboard the cruise ship MV Hondius have been infected with hantavirus. Of these, three have died, and five have been confirmed to have the virus. However, more people are likely to be infected, as the disease can take a long time to show symptoms.

The luxury cruise ship was carrying around 150 passengers and crew members from 28 countries.

The nationalities included 38 people from the Philippines, 31 from the United Kingdom, 23 from the United States, 16 from the Netherlands, 14 from Spain, nine from Germany, six from Canada and two crew members from India, BBC reported.

While it is yet not known whether they're infected or not, Dr Puneet Misra, Professor of Community Medicine, AIIMS Delhi, told ANI News Agency that it is likely that the two passengers "might have been exposed to the infection".

He added that "there is no pandemic or epidemic threat" with hantavirus. "The public should not worry. There is no need for panic..."

Follow this page for all latest updates:

US President Donald Trump is hopeful that the deadly hantavirus outbreak is very much under control. However, questions are mounting as his administration cut funding to study the rat-borne virus last year.

According to the World Health Organization, eight people onboard the cruise ship MV Hondius have been infected with hantavirus. Of these, three have died, and five have been confirmed to have the virus. However, more people are likely to be infected, as the disease can take a long time to show symptoms.

Speaking to reporters Thursday, Donald Trump sought to reassure Americans that the situation appeared contained.

“It’s very much, we hope, under control,” Trump said during an impromptu appearance near the Lincoln Memorial Reflecting Pool in Washington, DC. The President added that the administration planned to release “a full report” on the incident and said health officials were continuing to study the outbreak closely.

“We’re doing the best we can,” Trump told reporters when asked whether Americans should worry about the wider spread of the virus.

Notably, at least 23 passengers from the hantavirus-affected MV Hondius cruise ship returned home, including several to the United States — and one of them has already fallen ill.

Hantavirus Cases In The US?

The travelers reportedly did not know they had been exposed to the deadly virus when they disembarked during the ship’s stop at Saint Helena, a remote island in the South Atlantic, on April 23.

People in at least five US states — Georgia, Arizona, California, Texas, and Virginia — are reportedly being monitored for possible hantavirus exposure, though none have shown symptoms.

According to Dr. Jay Bhattacharya, Director of the US National Institutes of Health (NIH), “Hantavirus is not spread by people without symptoms, transmission requires close contact, and the risk to the American public is very low.”

CDC Cuts On Hantavirus Research

Behind the public reassurance, however, health authorities are confronting a situation that remains poorly understood — particularly because the Trump administration last year cut funding to study the virus behind the deadly cruise ship outbreak, and also fired scientists in key positions who were tracking viruses.

The Centers for Research in Emerging Infectious Diseases were designed to study viruses that could jump from animals to people, including hantavirus, but in 2025, the National Institutes of Health said the work would not continue.

Further, in its 2026 budget request, on one hand, the Trump administration said it planned to refocus the CDC on outbreak investigations and preparedness; on the other hand, it proposed eliminating about $750 million in preparedness grants that states rely on to cope with natural and man-made disasters, including outbreaks.

It also zeroed funding for the Hospital Preparedness Program, which strengthens healthcare systems to respond to emergencies, saying the program “has been wasteful and unfocused”, the New York Times reported.

Notably, the effects of the Trump administration’s cuts to infectious disease research are also being felt globally. South Africa has the capacity to sequence the hantavirus partly because of investments made by previous US administrations through the President’s Emergency Fund for AIDS Relief (PEPFAR), Dr. Carlos del Rio, an infectious disease expert at Emory University, told reporters.

However, the Trump administration has significantly reduced support for South Africa’s research system and is pulling back funding for PEPFAR.

“I worry that as we disinvest in global health, we’re losing our capacity — our global capacity — to deal with diseases,” Dr. Del Rio said.

The six-week-long incubation period of Hantavirus is a matter of concern, but the rat-borne disease is certainly not a large epidemic, said the World Health Organization today.

At a media briefing, the WHO Director General Dr Tedros Adhanom Ghebreyesus, expressed concerns about the time taken for the symptoms of the disease to appear.

He noted that so far the disease has been limited to the 150 people who traveled on board the MV Hondius ship. Of these, only 8 people have been infected - 3 have died, and 5 have been confirmed.

A case has been reported in a person who disembarked from the ship, without having the symptoms, and some have self-isolated to prevent the risk of spreading.

Among those on board the ship, now travelling to the Canary Islands, "currently no one is symptomatic".

However, "with a six-week incubation period, more cases are expected to be reported".

Countries involved in the contact tracing efforts of people who disembarked at St. Helena Islands include Canada, the Netherlands, Singapore, Turkey, the UK, and the US, the WHO chief said.

WHO infectious disease epidemiologist Maria Van Kerkhove reiterated that the disease spreads only among close, prolonged contacts or those providing care, as seen in the case of the doctor who got infected on board.

The WHO also noted that the disease is unlikely to become a large epidemic, as it's an isolated case occurring in a closed environment. However, public health measures like contact tracing and testing are key to preventing any further spread.

According to the WHO, the outbreak of the rat-borne disease among people aboard the MV Hondius ship after it left Argentina on April 1 was caused by the Andes strain.

Speaking to HealthandMe, Dr. Gautam Menon, Epidemiologist and Professor of Physics and Biology, Ashoka University, Delhi-NCR, said that the long incubation period is likely to complicate the spread of the hantavirus.

"What complicates matters is that incubation periods - the time between getting infected and symptoms showing - are large, up to several weeks, so passengers and their contacts will have to be quarantined for a long period before they can be declared safe." The expert said.

Is Hantavirus Similar To COVID-19?

Ven Kerkhove said that hantavirus causes severe respiratory issues, but it is still not the same as SARS-CoV-2.

This is not a new virus and is completely different from SARS-COV-2. It has caused similar outbreaks in Argentina in 2018, where contact tracing and other public health measures contained the spread.

"The outbreak of Hantavirus on a cruise ship has generated significant anxiety around the world, evoking memories of cruise ships affected by COVID-19 in the first phase of the pandemic. However, this is a different virus that is not known to spread efficiently from person to person. Its characteristics are already well-documented, unlike the SARS-CoV-2 virus, which was an unknown organism until then," Dr. Rajeev Jayadevan, Ex-President of IMA Cochin and Convener of the Research Cell, Kerala, told HealthandMe.

"The current cases do not indicate a pandemic threat, but they underline the growing importance of surveillance of zoonotic diseases. Strengthening rodent control, environmental hygiene, and early detection systems remains essential to prevent localized outbreaks and public panic. There is neither a proven treatment for its cure nor is there any vaccine," added Dr.Ishwar Gilada, Mumbai-based infectious disease expert.

How does The Hantavirus Affect The Human Body?

Hantavirus infection is caused by the hantavirus, which belongs to the Hantaviridae family. It is is rare but can be life-threatening.

The infection presents with initial symptoms resembling the flu and has a relatively high mortality of about 40%.

Also read: Hantavirus Sparks Global Alert As Countries Race To Trace Contacts; WHO Says Risk Low

Even though this virus is not believed to spread very efficiently, it would have done so far more easily in the enclosed environment that the ship provided, the experts said.

Dr Neha Rastogi, Senior Consultant, Infectious Diseases, Fortis Memorial Research Institute, Gurugram, told HealthandMe that it can be contracted by coming into contact with rodent saliva, urine, and feces.

Hantavirus can cause infection - 2 syndromes: hantavirus pulmonary syndrome and haemorrhagic fever that may quickly develop into severe respiratory illness, as flu-like symptoms (fever, muscle aches, and fatigue) occur before developing serious respiratory symptoms (dyspnea) that may require respiratory assistance.

"On rare occasions, it can also spread from person to person through close contact. Rapid diagnosis and intensive medical treatment are critical for a successful outcome," Dr Rastogi said.

"Preventative measures include proper personal hygiene, avoiding contact with rodents or rodent-inhabited areas; using PPE when cleaning; and ensuring the area is well-ventilated," she added.

Although hantavirus infections can cause severe respiratory illness with high mortality, confirmed human cases globally remain relatively uncommon, Dr Gilada told HealthandMe

"The pneumonia syndrome caused by the virus is due to excessive permeability of blood vessels, resulting in fluid accumulation. It is managed with expert supportive care while the lungs recover, as there are currently no known antivirals or vaccines available for the Andes virus. By carefully tracking contacts and isolating those who might be infected, the virus can be stopped in its tracks, bringing this outbreak under control," Dr Jaydevan said.