The Lymphatic System
PodcastDX
The lymphatic system, or lymphoid system, is one of the components of the circulatory system, and it serves a critical role in both immune function and surplus extracellular fluid drainage. Components of the lymphatic system include lymph, lymphatic vessels and plexuses, lymph nodes, lymphatic cells, and a variety of lymphoid organs. The pattern and form of lymphatic channels are more variable and complex but generally parallel those of the peripheral vascular system. The lymphatic system partly functions to convey lymphatic fluid, or lymph, through a network of lymphatic channels,...
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Pancreatic Cancer
PodcastDX
This week we are talking about Pancreatic cancer. This is a type of cancer that begins as a growth of cells in the pancreas. The pancreas lies behind the lower part of the stomach. It makes enzymes that help digest food and hormones that help manage blood sugar. The most common type of pancreatic cancer is pancreatic ductal adenocarcinoma. This type begins in the cells that line the ducts that carry digestive enzymes out of the pancreas. Pancreatic cancer rarely is found at its early stages when the chance of curing it is greatest. This is because it often doesn't cause symptoms until...
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Diabetes Type 1 & 2
PodcastDX
This week we discuss diabetes mellitus, a group of diseases that affect how the body uses blood sugar (glucose). Glucose is an important source of energy for the cells that make up the muscles and tissues. It's also the brain's main source of fuel. The main cause of diabetes varies by type. But no matter what type of diabetes you have, it can lead to excess sugar in the blood. Too much sugar in the blood can lead to serious health problems. Chronic diabetes conditions include type 1 diabetes and type 2 diabetes. Potentially reversible diabetes conditions include prediabetes and gestational...
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Mast Cell Activation Syndrome MCAS
PodcastDX
Mast cell activation syndrome (MCAS) is when you have unexplained episodes of severe symptoms like swelling, diarrhea, vomiting, flushing and itching. Unlike that happen with a specific exposure, MCAS episodes happen without a clear trigger. In some cases, mast cell activation can cause , a severe allergic condition that can be life-threatening. It can cause you to have trouble breathing and drop your to dangerously low levels. Call 911 (or your local emergency service number) or go to the nearest emergency room if you’re experiencing severe anaphylaxis. are a type of immune cell...
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Lung Cancer
PodcastDX
Lung cancer is the third most common cancer in the U.S. It’s caused by harmful cells in your lungs growing unchecked. Treatments include surgery, chemotherapy, immunotherapy, radiation and targeted drugs. Screening is recommended if you’re at high risk. Advances in treatments have caused a significant decline in lung cancer deaths in recent years. Lung cancer is a disease caused by uncontrolled cell division in your . Your cells divide and make more copies of themselves as a part of their normal function. But sometimes, they get changes (mutations) that cause them to keep making...
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Home Eye Safety
PodcastDX
Did you know that about half of all eye injuries happen right at home? Home activities that can injure your eyes include: Cleaning. Chemicals like bleach in household cleaning products cause 125,000 eye injuries each year. Home Improvement. Screws, nails and hand tools can launch into the air—and into your eyes. Power tools can also send wood chips or other substances flying into the air. Yard Work. Lawn mowers, trimmers and even shovels can throw dirt and debris into the air. Branches, twigs and thorns can also be dangerous. Unfortunately, only about three out of 10 people wear...
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Change the Outcome with Nutrition & Exercise
PodcastDX
This week we discuss changing the outcome of your health with nutrition & exercise. Our guest today is Dr. James Thompson, the author of Fearless Wellness and a passionate advocate for transformational change. He completed medical training 35 years ago and has dedicated my career to empowering others to live healthier, more fulfilling lives. He experienced a life-changing event in 2012 and participated in a 2 with my church community. Though the three-week diet, equivalent to a whole food plant-based diet, was intended to emphasize prayer, the impact of the food intrigued...
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Dangers of Impaired Driving
PodcastDX
This week we discuss the dangers of impaired driving. Impaired driving poses significant dangers, leading to thousands of fatalities and injuries each year due to reduced coordination, judgment, and reaction times. Definition and Causes Statistics Effects of Impairment Preventive Measures Conclusion Impaired driving is a serious public safety issue that leads to numerous preventable deaths and injuries each year. By understanding the dangers and implementing effective preventive measures, we can work towards reducing the incidence of impaired driving and...
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Falls Prevention
PodcastDX
Falls are a threat to the health of older adults and can reduce their ability to remain independent. However, falls don't have to be inevitable as you age. You can reduce your chance of falling or help a loved one prevent falls. There are proven ways to reduce and prevent falls, even for older adults. We identify older adults as anyone 65 years and older. Physical changes and health conditions — and sometimes the medications used to treat those conditions — make falls more likely as you age. In fact, falls are a leading cause of injury among older adults. Still, fear of falling doesn't...
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BiPolar Revisited
PodcastDX
Due to a scheduling glitch we are doing a rerun today of an episode Paris Scobie did with us earlier this year. Paris is a Mental Health Speaker, Host of the top 1% globally ranked podcast, , & Best-Selling Author of her memoir, . Paris launched Live Well Bipolar to use her lived experience to help others overcome the shame, fear and isolation that can so often accompany living with bipolar. She shares how she went from being a patient struggling from inside the walls of a psychiatric hospital newly diagnosed with bipolar to returning to work at this same hospital years later....
info_outlineThis Week on PodcastDX: Understanding POTS with Dr. Diana Driscoll
This week we are honored to welcome none other than Dr. Diana Driscoll, a world-renowned authority on the autonomic nervous system. An optometrist and Fellow of the American Academy of Optometry (FAAO), Dr. Driscoll is internationally recognized for her groundbreaking research on Postural Orthostatic Tachycardia Syndrome (POTS) and other conditions once thought to be “invisible.”
Dr. Driscoll has dedicated her career to improving the lives of those affected by autonomic disorders. Her journey began as a patient herself, battling POTS. Frustrated by the lack of answers, she self-funded much of her research to accelerate progress for patients today. That personal fight has fueled over a decade of innovation in diagnosis and treatment strategies that are transforming patient care.
In this episode, we explore her unique perspective as both a former patient and a leading researcher. Dr. Driscoll shares her story, her research, and her vision for the future of POTS treatment.
What is Postural Orthostatic Tachycardia Syndrome (POTS)?
POTS is a form of orthostatic intolerance that causes the heart to beat abnormally fast when moving from sitting or lying down to standing up. Breaking down the name helps explain the condition:
• Postural: Related to body position
• Orthostatic: Related to standing upright
• Tachycardia: A heart rate above 100 beats per minute
• Syndrome: A collection of symptoms occurring together
Normally, the autonomic nervous system keeps heart rate and blood pressure stable regardless of position. In POTS, that balance is disrupted. The body struggles to constrict blood vessels and regulate heart rate properly, leading to dizziness, lightheadedness, fainting, fatigue, and more.
Who Does POTS Affect?
POTS affects an estimated 1 to 3 million Americans, most often women between the ages of 15 and 50. However, men can develop the condition as well.
Risk factors include:
• Viral or serious infections (such as mononucleosis)
• Pregnancy
• Physical trauma or surgery
• Certain autoimmune conditions (e.g., Sjögren’s syndrome, lupus, celiac disease)
How Does POTS Affect the Body?
When standing, gravity naturally pulls 10–15% of blood into the lower body. Normally, leg muscles and hormonal responses (like the release of epinephrine and norepinephrine) help keep blood circulating back to the brain and heart.
For people with POTS, too much blood pools below the heart. Their blood vessels don’t constrict properly, forcing the heart to compensate by racing. This imbalance causes hallmark symptoms such as dizziness, exhaustion, brain fog, and even fainting.
While POTS is not life-threatening, it can be life-altering. Daily tasks may become difficult, and symptoms often fluctuate over time. The good news: with the right combination of dietary adjustments, medications, and physical activity, many people experience meaningful improvements in their quality of life.
Learn More
Join us as Dr. Diana Driscoll shares her remarkable journey, her patient-centered research, and her continuing mission to bring visibility and solutions to the millions living with POTS.