Cancer is a large group of diseases that can start in almost any organ or tissue of the body when abnormal cells grow uncontrollably, and go beyond their usual boundaries to invade adjoining parts of the body. According to the World Health Organization (WHO), it is the second most common cause of death globally, accounting for millions of deaths every year. Lung, prostate, colorectal, stomach and liver cancer are the most common types of cancer in men, while breast, colorectal, lung, cervical and thyroid cancer are the most common among women. However, these are not necessarily the deadliest forms of cancer.

What makes cancer the deadliest depends upon how many people have it and what percentage of those people actually survive. Cancer researchers determine this on the basis of five-year relative survival. This is the percentage of people who are expected to survive the effects of a given cancer, excluding their risk of other possible causes of death, for five years past a diagnosis. It is also important to note that what makes cancer really deadly is that practically no cure for it. A cure for cancer would imply that there are no cancerous cells remaining in the body.

Here are the 5 deadliest cancers in the U.S., according to SEER five-year relative survival data for cases diagnosed between 2014 and 2020.

1. Pancreatic cancer occurs when cells in your pancreas, a gland in your abdomen that aids digestion, mutate and multiply out of control, forming a tumour. Major risk factors include smoking, obesity, diabetes, chronic pancreatitis, certain genetic mutations and environmental chemical exposure.

2. Esophageal cancer develops in the oesophagus, which is the tube that connects your throat to your stomach.

3. Liver cancer and intrahepatic bile duct cancer originate in the liver or bile ducts, often linked to hepatitis infections, heavy alcohol use, obesity, and aflatoxin exposure.

4. Lung and bronchus cancer primarily caused by smoking, secondhand smoke, and environmental pollutants, affects the lungs and airways, making it the leading cause of cancer death in the US.

5. Acute myeloid leukaemia (AML) is an aggressive blood and bone marrow cancer that progresses rapidly, often linked to genetic mutations, radiation exposure, and certain chemicals.

ALSO READ: Why Are Lifestyle Factors Making Millennials Vulnerable To Cancer?

Open AI launched a new ChatGPT feature in the US, called the ChatGPT Health. As of now, this is launched only in the United States, which can analyze people's medical records and give them better answers. However, it has also drawn attention of critics, who raise concerns regarding the privacy, as well as safety of diagnosis and treatment.

What Is ChatGPT Health?

As per the Open AI website, "Health is a dedicated space in ChatGPT where you can ask health and wellness questions and choose to connect your health data (like medical records and wellness apps) so responses can be grounded in that context. It is designed to support, not replace, medical care."

One can access Health from the sidebar and can ask health-related questions in a main chat. OpenAI has said that the conversations in ChatGPT Health would be stored separately to other chats and would not be used to train its AI tools. The feature will also not be used for "diagnosis or treatment".

However, Andrew Crawford, of US non-profit the Center for Democracy and Technology, as reported in the BBC said, it was "crucial" to maintain "airtight" safeguards around users' health information. "New AI health tools offer the promise of empowering patients and promoting better health outcomes, but health data is some of the most sensitive information people can share and it must be protected," Crawford said.

Why Is This Feature Being Introduced?

OpenAI notes that more than 230 million people ask its chatbot questions related to health and wellbeing, at least every week. Thus the feature is being launched, while ChatGPT Health will have "enhanced privacy to protect sensitive data".

Open AI also noted that users can connect it with third party wellness apps to get the data, for instance Apple Health, Peloton, and MyFitnessPal. These apps can provide the medical records to OpenAI's new feature to generate relevant responses.

In a blogpost, Open AI noted: "You can securely connect medical records and wellness apps to ground conversations in your own health information, so responses are more relevant and useful to you. Designed in close collaboration with physicians, ChatGPT Health helps people take a more active role in understanding and managing their health and wellness—while supporting, not replacing, care from clinicians."

Will This Feature Replace Doctors?

OpenAI claims that ChatGPT Health is not launched to replace medical care, rather to help one navigate everyday questions and understand patterns over time. OpenAI claims that the tool was developed in close collaboration with physicians.

In the last two years, OpenAI said that it was able to work with more than 260 physicians across 60 countries and dozens of specialities, who have provided feedback on model outputs more than 600,000 times.

While the feature is only launched in the United States, however, the company said that it plans to make Health available to all users on web and IOS "in the coming weeks" as the experience is refined.

Flu cases are rising in the US, with the virus exploding across the country. Like many experts have earlier pointed that that this would be the 'worst season' and that 'it is not over yet'. The Centers for Disease Control and Prevention or CDC data too tells us that records are reaching all time highs in some cases.

What Does CDC Data Say About Increased Flu Activity In US?

For the first time since 1997, when flu data was first tracked, 8% of visits to doctors related to flu or flu-like illness and symptoms the week ending with December 27 has increased. Hospitalization too increased by 48% week over week, which has now amounted to 120,000 hospitalization and 5,000 deaths so far in this season.

The CDC data shows that just under 33% or 23,350 of the 70,757 fly tests were reported positive to the National Respiratory and Enteric Virus Surveillance System. This was also up by 9% during the first week of December.

Regions like Colorado, Montana, North Dakota, South Dakota, Utah and Wyoming reported numbers as high as over 45%. CDC also noted "very high" activity in the Northeast, the week ending with December 27, including in New York, Massachusetts, and North Carolina.

Wastewater data by WasterWaterSCAN, a Stanford University-led tool also tracked the spread of the disease and said that the flu activity was "high". It noted that the activity increased by 146%.

Why Is This Season's Flu The Worst One Yet?

This year's flu came after the flu vaccination was made, which means the current vaccination does not align with the mutation, however, experts have pointed out that it still continues to offer protection against the illness. This season's flu is a mutation of H3N2 or influenza A, called the subclade K, or what people are calling 'super flu'.

This is the culprit in rising flu cases, globally. The World Health Organization (WHO) on its website said that K variant marks "a notable evolution in influenza A (H3N2) viruses". Some are also questioning the effectiveness of this season's influenza vaccine against the strain.

Read: Unique Symptoms Of Flu In 2026 And How Long Infection Now Last

The flu virus is highly contagious and spreads easily in crowded places, especially during the colder months.

In some cases, the infection can progress to the lungs, which could lead to complications like bronchitis or pneumonia. Yale Medicine too notes that this virus could attack the respiratory system, including throat, nose, and lungs.

What Are The Common Symptoms This Season For The Flu?

K variant causes more intense flu symptoms, they include:

• Fever
• Chills
• Headache
• Fatigue
• Cough
• Sore throat
• Runny nose

Are The Old Vaccines Effective Against This New Variant?

"The vaccine remains the most effective means to prevent disease. We still want to encourage people to get the vaccine," said Professor Antonia Ho, Professor and Honorary Consultant in Infectious Diseases at the University of Glasgow. Experts have stressed enough on the immunity that one can receive from the vaccine that that these flu jab remain the best defense against the flu, even though the current strain circulated may have drifted away from the strain included in this year's jab.

Data from the UK Health Security Agency (UKHSA) also show that vaccines is performing as expect, despite the emergence of subclade K.

The Food and Drug Administration or FDA recalled cheese from one of the largest importers and distributers of specialty cheese from Italy over listeria contamination. As per FDA, seven different products have been issued a Class I recall. The recalls were initiated by The Ambriola Company's headquarters in West Caldwell, New Jersey. While the recalls were initiated at the end of November, the FDA signed classifications for the contaminated cheese on January 6.

Which Cheese Products Are Recalled For Listeria Contamination By FDA?

• 1.5 lb. plastic bags of grated Sam’s Pecorino Romano, 12 units per case

1,015 bags were recalled

• 10-pound plastic bags of Pinna Grated Pecorino Romano 2/10

45 bags were recalled

• 5-pound plastic bags of Boar’s Head Grated Pecorino Romano

405 bags were recalled

• 6 oz. plastic cup and lid Boar’s Head Grated Pecorino Romano

2,106 units were recalled

• 5 and 10-pound plastic bags of Ambriola Piccante grated Pecorino Romano

179 bags were recalled

• 48/8 oz. shipper, plastic cup and lid, Locatelli Grated Pecorino Romano

184 units were recalled

• 5 and 10-pound plastic bags of Locatelli Grated Pecorino Romano

964 bags were recalled

What Is Listeria?

This is a bacterial pathogen which is responsible for listeriosis. This is a serious foodborne illness. It thrives in various environment, including soil, water, and food processing facilities and is gram-positive and rod-shaped in its nature. It can also grow at refrigeration temperature which can then infect dairy products, deli meats, seafood, and unpasteurized milk.

As per the Centers for Disease Control and Prevention (CDC(, Listeria are bacteria or germs that can contaminate many food and those who eat can get infected with the bacteria. CDC mentions that it is rare, however, could be serious, though there exists steps to prevent this infection.

It is a foodborne illness caused by the bacteria L. monocytogenes. Symptoms include fever, chills, and headache. It can cause invasive illness and intestinal illness. It is also the third leading cause of deaths from foodborne illness in the US, with 1,600 people infected each year, out of which 260 die.

Symptoms often appear within two weeks of consuming Listeria-contaminated food, but can appear as early as the same day or as late as ten weeks later.

A fever, muscle aches, and fatigue are common symptoms of pregnancy.

People who are not pregnant usually have fever, muscle aches, and tiredness. They may also get a headache, stiff neck, confusion, loss of balance, or seizures.

Read: FDA Launches An Online Tool That Can Check Contaminant Levels In Foods

What Are The Different Types Of Food Contamination?

Some of the common examples could be Salmonella, E. coli, and Listeria. These microorganism can also multiply rapidly under favorable conditions, which poses health risks.

Chemical contamination

This happens when food comes in contact with chemicals which can lead to contamination. These chemicals could be of wide range, including pesticides, food additives cleaning agents, or toxins from contaminated water. Consuming chemically contaminated food can lead to acute poisoning or long term health issues.

Physical contamination

This means that foreign objects have contaminated the food, which may include glass, metal shavings, plastic or food. Often times, these contaminants find their way into food during processing and preparation.

Allergen contamination

This is could involve the unintentional transfer of food allergens. It may occur while using a share equipment, utensils, surfaces, or airborne particles that makes the food unsafe.