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Dr. MacKenzie Pellin, Dr. Laurie Malone & Dr. Patricia Ungar: Sniffer Dogs: Detect Cancer and COVID

Release Date: 11/26/2024

Dr. Chris Beyrer: Cuts to USAID Harm the Health and Prosperity of US Citizens

Critically Speaking

The opinions expressed by Dr. Beyrer are his own and not those of his employer. In this episode, Therese Markow and Dr. Chris Beyrer discuss the importance of USAID, highlighting its role in global health and development, particularly through programs like PEPFAR, which has saved 25 million lives and prevented millions of HIV infections. Dr. Beyrer emphasizes that the economic and security benefits of USAID, whose support amounts to less than 1% of the total US federal budget, have had important benefits at home in the United States. It protects us from infectious diseases like Ebola and...

Dr. Adam Berinsky: Political Rumors and Misinformation

Critically Speaking

In this episode, Therese Markow and Dr. Adam Berinsky discuss political rumors and misinformation. Dr. Berinsky defines rumors as unsubstantiated claims without evidence, emphasizing their social transmission. He identifies two factors influencing rumor belief: conspiratorial thinking and partisan polarization. Berinsky's research reveals that while some people firmly believe rumors, others are ambivalent and more open to correction. He suggests focusing on these undecided individuals rather than entrenched believers. Berinsky also highlights the role of political leaders in spreading...

Near Death Experiences

Critically Speaking

In this episode, Therese Markow and Dr. James Alcock discuss what near-death experiences are and the increase in them in recent years due to improvements in medical technology. While near-death experiences (NDEs) have been known about for a long time, we, as a scientific community, are starting to understand more about what they mean for neurological processes. However, despite knowing the science of what is happening, NDEs and how they are experienced are subject to one’s own beliefs, context, and even religious framework. Dr. Alcock and Therese also discuss the relationship between...

Dr. Deborah Lang: What is Skin Cancer?

Critically Speaking

In this episode, Therese Markow and Dr. Deborah Lang discuss the rise of skin cancer, particularly melanoma, and its causes. Dr. Lang explains that skin cancers are derived from different skin cells: basal cell carcinoma and squamous cell carcinoma, both linked to UV exposure, and melanoma, which can be UV-independent and linked to genetic susceptibility. Dr. Lang emphasizes the importance of early detection and personalized medicine, noting that melanoma can metastasize early. She also highlights the role of genetic mutations in cancer development and the impact of funding cuts on cancer...

Dr. Anice Lowen: Bird Flu - Should We Worry?

Critically Speaking

In this episode, Therese Markow and Dr. Anice Lowen discuss the bird flu outbreak, highlighting the virus’s spread from birds to dairy cattle and recorded cases of human infection. Dr. Lowen explains the differences between influenza A and influenza B viruses, talks about which type causes pandemics, and what we can do to try to prevent future pandemics from these flu strains. Key Takeaways: An epidemic affects a specific region, a pandemic is global. Only Influenza A viruses can cause pandemics and are often transmitted via birds and mammals. Humans can become...

Dr. Joshua Weitz: Asymptomatic COVID-19 Spreaders

Critically Speaking

In this episode, Therese Markow and Dr. Joshua Weitz discuss his book "Asymptomatic: The Silent Spread of COVID-19 and the Future of Pandemics" and his work in understanding the risk of COVID spread from as early as spring of 2020. He highlights the double-edged sword of asymptomatic infections, discusses what governments could do to help mitigate at-risk populations, and what we, as individuals, can do to help keep everyone safe. Dr. Weitz criticizes early predictions of COVID-19's disappearance by mid-2020, attributing the error to underestimated infections and behavioral changes. He...

Dr. Ajit Nirmal: Arms Race Against Cancer

Critically Speaking

When we hear the term tumor or cancer, the image that often comes to mind is a bunch of bad cells next to normal ones, and growing. Like many things, it's just not that simple. How do the normal cells turn bad? Can our immune systems detect the cancer cell and kill it? Why does some initially successful chemotherapy stop working? Why does cancer spread? These are all great questions, since cancers of one kind or another will affect so many of us either as patients, friends, or loved ones. Well, basic science is providing some critical answers. In today’s episode, Therese Markow and Dr. Ajit...

Dr. Jodi Gilman: Cannabis and Your Brain

Critically Speaking

In this episode, Therese Markow and Dr. Jodi Gilman discuss the implications of cannabis use on health and safety. Dr. Gilman explains that THC, the main psychoactive compound in cannabis, binds to cannabinoid receptors in the brain, affecting areas involved in emotion, memory, and decision-making. Cannabis use can lead to long-term brain alterations, particularly in adolescents, frequent users, and those using high-potency products. Dr. Gilman highlights the risks of cannabis-induced psychosis, depression, and anxiety, especially in those with a family history of psychosis. She also notes the...

Dr. Robert Meade: Health Dangers from Rising Heat

Critically Speaking

In this episode, Therese Markow and Dr. Robert Meade, an expert in thermal physiology, discuss the dangers posed to human health by the rising heat. Dr Meade explains that extreme heat is a combination of air temperature and humidity, which can strain the body's ability to regulate temperature. He notes that older adults and women may be more vulnerable to heat stress due to reduced sweating and cardiovascular function. They talk about the differences between heat stress and heat stroke and how to identify symptoms to keep an eye on if you are in a hot environment. The discussion highlights...

Dr. Brandon Sparks: Incels - Involuntary Celibacy

Critically Speaking

In this episode, Therese Markow and Dr. Brandon Sparks discuss the phenomenon of involuntary celibacy (incels). Dr. Sparks, an applied forensic psychologist, explains that incels are men experiencing long-term involuntary celibacy, often due to social exclusion and bullying during adolescence. Incels, primarily aged 18-30, are less likely to be in education or employment. The term "incel" originated from a woman's project at Carleton University. Incels often self-identify online, where they discuss the "Black Pill" philosophy, a nihilistic view of society. Dr. Sparks highlights the need for...

More Episodes

In this episode, Therese Markow, Dr. MacKenzie Pellin, Dr. Laurie Malone, and Dr. Patricia Ungar explore how dogs can detect early signs of cancer and COVID-19. They discuss their collaborative research, how the dogs are trained, and the types of diseases that these medical scent dogs can help to identify. They also discuss how the dogs' accuracy rivaled or exceeded other tests, but logistical challenges exist in public screening. The potential for early cancer detection and mass COVID screening is highlighted, emphasizing the need for further research and public acceptance.

Key Takeaways:

Medical scent dogs began first with observation as it was noticed that many dogs indicated carcinomas in their owners.
Longnose dogs tend to be more beneficial than others, such as a French Bulldog or those with a shorter snout, in scent detection.
While the initial training can take several months, dogs have a long scent memory. If you want them to train a new scent, that can take a couple of months.
Dogs could detect covid infection prior to symptoms or testing

"The goal is early detection, but to be efficient and really valuable for a screening test, tests need to be accurate, it needs to be easy, and it should be cost-effective too." — Dr. MacKenzie Pellin

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