How Parasites Are More Common Than You Think with Sebastian Lourido

In this MIT Learn Beyond Biology episode, MIT Lecturer in Biology, Darcy Gordon, speaks about living with bipolar disorder with the host, Mary Ellen Wiltrout. Darcy shares how she navigated treatment and disclosure through school and the workplace, motivating the building of more inclusive learning environments. Darcy discusses how personal experience shaped her scientific curiosity and commitment to helping students feel welcome, while emphasizing that disclosure is always a personal choice. Enjoy this pilot episode of the Beyond Biology show, although we released the recording later. Darcy Gordon, PhD, is the Lecturer in Blended Learning and Online Initiatives, Department of Biology and Open Learning, MIT.

Resources

Audio version of this Beyond Biology episode on MIT Learn

7.03.3x Genetics: Population Genetics and Human Traits on MIT Learn

See more of Darcy's work on the Pulse Shorts on MIT Learn

Key Topics

• Darcy describes experiencing depression and mood changes in adolescence, receiving a bipolar II diagnosis, and learning to recognize hypomania symptoms such as insomnia, racing thoughts, grandiosity, and risky behavior.

• Her sister recognized how serious things had become and urged their parents to seek help; stigma made it difficult for Darcy to be candid with clinicians at first.

• School and college brought uneven support: understanding high school teachers, limited counseling capacity in college, and a period without therapy despite ongoing medication.

• Darcy explains that bipolar disorder has no cure and that treatment is focused on managing symptoms.

• She recounts contrasting professor responses when she disclosed her diagnosis, and recommends beginning with appreciation, asking what support is useful, and avoiding intrusive demands for details.

• Her academic path moved from organismal biology research on crickets to a PhD studying ants, then toward education after teaching and mentoring became especially meaningful.

• At MIT, Darcy experienced imposter syndrome and uncertainty about the disability disclosure checkbox in a job application, reflecting the vulnerability involved in sharing a hidden disability.

• Darcy discusses genetic association research and the complexity of mental illness, including genetic, environmental, and contextual contributions; she hopes for more targeted treatments.

• Her inclusive teaching work treats students’ lives beyond the classroom as relevant to creating welcoming, accessible learning environments.

• Darcy stresses that openness can reduce isolation, but nobody owes anyone their story, and disclosure may not be safe in every setting.

  Timestamp Highlights

  00:00 The fear and uncertainty of disclosing a hidden disability

  02:15 A childhood curiosity for life sciences and learning

  06:01 Adolescent depression, symptoms, and getting a diagnosis

  11:11 What hypomania looked like in daily life

  16:09 College transitions and gaps in mental health support

  21:57 Lifelong treatment and the diabetes comparison

  24:18 Two very different reactions to disclosure

  30:28 How biology made the science of the brain personal

  33:24 From cricket research to studying ant societies

  38:30 Teaching, mentorship, and finding a career in education

  41:06 Applying to a job at MIT and confronting the disability checkbox

  44:19 Imposter syndrome and learning to trust others’ judgment

  48:00 What genetic studies can and cannot tell us about bipolar disorder

  52:04 Darcy choosing to share her story at MIT

  58:04 Inclusive teaching and recognizing students’ full lives

  01:00:05 What Darcy would tell her younger self

  01:01:24 Disclosure is personal, and safety comes first

  Keywords

  Darcy Gordon, bipolar disorder, mental health, disability disclosure, higher education, inclusive teaching, MIT, science education

In this MIT Learn Beyond Biology episode, MIT professor Dimitris Bertsimas joins Mary Ellen Wiltrout to share how advances in data and AI enable healthcare to move beyond one-size-fits-all treatment. Dimitris discusses how operations research, AI, and patient data could help make medicine more personal with a focus on diabetes care. Dimitris shares how family experiences shaped his healthcare research, including work using electronic medical records to help personalize diabetes treatment. He also explains how genomic data could support earlier intervention, why sharing anonymized health data matters, and how AI might help clinicians make decisions without replacing their judgment. The conversation ranges from optimizing Panama Canal operations to the future of personalized medicine and lifelong learning. Dimitris Bertsimas is the Vice Provost for Open Learning, the Associate Dean of Online Education and Artificial Intelligence, Sloan, and the Boeing Professor of Operations Research.

Key Topics

• What operations research is: Dimitris defines operations research as a scientific approach to designing, improving, and optimizing systems, with applications ranging from transportation to healthcare.

• A real-world optimization example: He recounts how modeling helped improve vessel scheduling and throughput at the Panama Canal.

• Why healthcare became a focus: The experiences of losing his father to gastric cancer and his mother to diabetes deepened his commitment to healthcare research.

• Personalizing diabetes care: His team worked with long-term electronic medical records to study how treatment combinations could be tailored to individual patients.

• The role of genomics: Dimitris discusses research into beta cell decline and the potential to identify diabetes risk earlier.

• His view of AI: He distinguishes analytics using structured data from AI approaches that can work with unstructured data, such as text and images.

• Why data sharing matters: He explains how anonymized patient data can support research while removing identifying details.

• AI in emergency departments: His group is piloting systems that combine triage notes and patient records to provide clinicians with a differential diagnosis and test suggestions.

• AI as clinical support: Dimitris emphasizes that AI should advise and assist; physicians remain responsible for decisions.

• Lifelong learning: He reflects on adapting to new fields and shares how MIT Open Learning serves learners at different stages of life.

Timestamps

00:00 Why medicine is still largely not personalized

01:13 What operations research means

02:15 Using optimization to improve Panama Canal operations

04:10 How family experiences led Dimitris toward healthcare research

05:53 Why diabetes became a personal and research priority

06:29 Type 2 diabetes and approaches to managing the disease

09:10 Studying long-term diabetes records

10:08 Using patient history to guide treatment choices

11:03 Early AI research in personalized diabetes care

12:24 Studying beta cell decline with genomic research

13:47 Dimitris’ distinction between analytics and AI

15:47 What personalized or precision medicine means

16:45 A personal story illustrating why cancer treatment can affect patients differently

18:22 How continuous glucose monitoring informs Dimitris’ own diabetes management

20:44 Why sharing anonymized health data can advance research

23:09 How anonymization works

24:47 Generative AI pilots for emergency department diagnosis support

26:15 Using AI to suggest diagnoses and tests for physician review

27:13 Reported effects on emergency department stays and insurance test rejections

28:44 Why AI should advise rather than make medical decisions

30:38 Dimitris’ five-year outlook for personalized medicine

33:03 Adaptiveness, impact, and continuous learning

35:29 Applying ideas through entrepreneurship and iteration

36:51 MIT Open Learning and lifelong learning resources

Resources

Universal AI on learn.mit.edu

7.00x Introduction to Biology course on learn.mit.edu

Dimitris Bertsimas Lab Website

MIT biology professor Alan D. Grossman shares the story of his medical crisis that began with unexpected lightheadedness on campus in 2002 and led to a heart transplant in 2006. The conversation traces the medical details of sarcoidosis, heart failure, immunosuppression, and recovery, while also showing how Alan kept teaching, mentoring, and leading through it all. After listening, you will gain a broader appreciation of resilience, rare disease research, and the life-saving impact of organ donation. Mary Ellen Wiltrout guides the story from diagnosis to transplant to leadership during the pandemic, with Alan reflecting on what changed in his work, priorities, and perspective.

Key topics

• Alan Grossman explains why his heart does not race when he gets nervous.

• He shares the day his health changed in July 2002.

• The initial diagnosis was heart block, which led to a pacemaker.

• Grossman discusses sarcoidosis, a rare inflammatory autoimmune disease that in his case attacked only the heart.

• He describes trying immunosuppression and anti-inflammatory treatment.

• As symptoms advanced, he developed heart failure.

• He explains how transplant candidacy depends not only on medical severity but also on support systems, infection risk, and the ability to survive the demanding post-transplant period.

• Grossman walks through how heart transplant surgery is physically straightforward but medically complex because rejection prevention is the real challenge.

• He explains the role of antibodies and cell markers in the immune system’s response to a transplanted organ.

• He recounts waiting more than a year for a heart, including one false alarm before the actual transplant offer in 2006.

• He describes the immediate post-op period, including high-dose steroids, hallucinations, pain, and a broken rib discovered later on an X-ray.

• He reflects on returning to work, rebuilding his lab, restarting teaching, and later helping create the microbiology graduate program at MIT.

• He talks about how surviving severe illness made him both more patient and less patient in different ways, and more willing to focus on what he can control.

• He explains leading the biology department during the pandemic and why his own long experience with immunosuppression shaped his caution around COVID.

• The episode closes with a direct call to register as an organ donor and to make those wishes known to your family.

Timestamps
00:00 Why a transplanted heart does not respond to nerves
00:31 Introducing Alan D. Grossman and the heart transplant story
01:37 Living with a denervated transplanted heart
02:29 The first symptoms on a hot day walking to work
04:11 Heart block, ambulance ride, and pacemaker placement
05:39 What a pacemaker does and why the diagnosis was not a heart attack
06:32 Diagnosing sarcoidosis and the mystery of organ-specific autoimmune disease
08:09 Why a scientist wants to understand a rare disease
09:24 Immunosuppression, inflammation, and why treatment did not stop progression
12:37 From early normal life to heart failure symptoms
13:39 The strict low-sodium and low-fluid strategy
14:18 Why transplant became necessary
15:37 What transplant candidacy requires beyond medical need
17:05 Why transplant surgery is simple on paper but hard biologically
18:09 How the immune system recognizes a donated heart as foreign
19:06 Post-transplant immunosuppression and long-term medication
20:25 Waiting for a heart and the role of arrhythmia and defibrillator support
21:35 What a defibrillator shock feels like
23:27 Months in the hospital and staying connected to work
24:30 Lab meetings from home and mentoring during illness
25:32 Focusing on what can still be controlled
27:30 The false alarm before the real heart became available
28:29 The transplant day and why he could not eat
29:35 Antibodies, compatibility, and the call that the heart was his
30:42 Steroids, hallucinations, and the rough early recovery
31:18 Pain, a broken rib, and the weeks after surgery
32:17 Going home, returning to MIT, and rebuilding the lab
34:18 Realizing he could create a microbiology graduate program
35:37 How severe illness changed patience, perspective, and administration
37:22 Becoming department head after first trying to avoid the role
39:21 The department’s shift toward online learning during COVID
40:31 Why the pandemic’s early work-from-home shift was easier than returning
42:42 Leading through uncertainty by emphasizing communication and connection
44:27 A message on organ donation and transplantation
45:11 How to register as an organ donor in the United States

In this episode of the MIT Learn Beyond Biology podcast, Dr. Summer Morrill, a high school biology teacher with deep roots in cancer genetics from her PhD work at MIT, unpacks the complex topic of cancer. Summer shares how her personal family history shaped her interest in the field, why cancer is not one disease, and how fundamental biology research helps explain everything from DNA repair to tumor suppression in humans.
This conversation is both scientifically rich and deeply human. This episode represents the reality that cancer research is not only about cells and mutations, but also about families, mentorship, resilience, and the ongoing search for answers. Learn more about biology and genetics at learn.mit.edu.

Resources

7.00x Introductory Biology course from learn.mit.edu

Key Topics

• Why having the BRCA1 gene is usually a misunderstanding

• How inherited mutations can increase cancer risk

• Why cancer is not a single disease

• What the cell cycle is and how the process can go wrong

• The difference between oncogenes, tumor suppressors, and DNA repair genes

• How genetic testing and counseling can be empowering

• Why yeast is such a powerful model organism in cancer research

• What haploinsufficiency means and why it matters

• How curiosity, failure, and mentorship shape scientific discovery

• Why cancer research requires many different disciplines working together

Takeaways

Summer explains that cancer often develops through a combination of mutations, environmental exposure, and the body’s own normal processes of cell division and DNA repair. She also highlights why the idea of a simple cure is misleading: cancer involves many pathways, many tissues, and many biological checks and balances. A major theme of the conversation is balance. Too little activity in a gene can be harmful, but too much can also cause problems. Summer’s research on haploinsufficiency showed that the body’s systems are more delicate and interconnected than they first appear. The episode also emphasizes the value of curiosity and mentorship. From her professors to her advisor to her mentor, Professor Angelika Amon, Summer’s path shows how the right people at the right time can shape a scientific career.

Understanding how bacteria evade our immune systems and cause disease is vital for developing better treatments and diagnostics. In this MIT Learn Beyond Biology podcast episode, MIT professor Becky Lamason shares her insights on bacterial pathogens, their interaction with human cells, and the future of infectious disease research. This discussion reveals not only the complexity of microbes but also how innovative science can uncover new paradigms in host-pathogen interactions. Stay to the end to learn more about Becky’s personal path to the lab.

Resources
MIT Learn online cell biology courses
Audio version of Beyond Biology on MIT Learn

MIT Department of Biology Profile of Becky Lamason

Key topics

• How bacterial pathogens break the rules of survival and adaptation

• Examples of bacterial infections and the dangers they pose, such as Listeria, Rickettsia, Salmonella, and Vibrio

• The unique strategies bacteria use to invade and persist inside human cells

• The difference between bacterial, viral, fungal, and parasitic pathogens

• Antibiotic resistance: development, implications, and the importance of proper use

• How bacterial size and shape compare to human cells

• Mechanisms of bacterial entry into cells via force or protein tricks

• The obligate dependence of certain bacteria like Rickettsia on living inside host cells

• The tick transmission cycle and how bacteria jump from vectors into humans

• Cell-to-cell spread of bacteria and the importance of intracellular movement

• The role of modern tools, genetics, microscopy, and genome editing in understanding pathogen biology

• Future directions: expanding research to environmental vectors, developing broad-spectrum diagnostics, and leveraging new technologies

Timestamps
00:00 The unpredictability of pathogens and their survival strategies
00:24 Introduction to Becky Lamason and the importance of bacterial pathogens
01:08 Common bacterial pathogens and infections in daily life
01:33 Food recalls and bacterial contamination in the environment
02:13 Focus on Listeria monocytogenes and clinical implications
02:41 Other bacteria like Rickettsia and their deadly potential
03:15 Symptoms of spotted fevers caused by Rickettsia
03:20 The range of bacterial disease symptoms and severity
04:01 Categorizing pathogens: bacteria, viruses, fungi, and parasites
04:28 Bacteria’s size relative to other microbes and complexity
05:04 The diversity within bacterial pathogens and their unique features
05:20 Treatment options for bacterial infections and antibiotic sensitivity
05:48 Antibiotic resistance: evolution, biology, and clinical impact
06:26 Practical advice: importance of completing antibiotic courses
08:02 The analogy of pathogens as cell biologists and their survival tactics
08:41 Bacteria’s ability to break rules of host cell biology
11:25 Comparing bacterial size to human cells; visualization of scale
12:19 How bacteria enter human cells through force or mimicry
12:33 The dependency of certain bacteria on living inside host cells
15:28 Transmission cycles involving ticks and environmental reservoirs
17:28 Mechanisms of bacterial cell spreading and invasion strategies
19:00 The concept of acute infection phases and bacterial proliferation
20:14 The ultimate goal of bacteria: replication and dissemination
21:28 Safety measures in the lab working with pathogenic bacteria
23:33 Connecting basic research to clinical applications and diagnostics
25:09 The power of microscopy and visual data in understanding infection
27:38 Memorable discoveries and unexpected breakthroughs in the lab
29:28 Future tech: genome editing, large-scale genetic analysis, and new directions
31:33 The significance of bacteria targeting host cell organelles like ER and nuclei
33:01 Becky’s journey, switching questions and embracing multidisciplinary work
35:41 Building community and embracing the unknown in scientific research
37:25 From high school curiosity to MIT professor: Becky’s personal story
39:56 Balancing real-world jobs and academic pursuits
42:12 The future of bacterial research: new tools and broader applications
44:02 Final thoughts and encouragement to explore and collaborate