Credit: iStock/simonapilolla Fall is here—a time for sweaters and scarves, warm beverages and changing leaves. Nights grow longer as the sun sets earlier, and in many parts of the U.S., we “fall back” from daylight saving to standard time to accommodate this shift. We may celebrate the feeling of getting to sleep in, or we … Continue reading Good Morning, Fall! How ‘Falling Back’ to Standard Time Affects Our Body Clock
Cardiovascular System
From Cortisol to Calm: The Physiology of Calm Breathing
Credit: Amin Mohajeri “Take a deep breath.” You’ve probably heard that advice—before a big exam, a tough conversation or when you’re feeling overwhelmed. And if you’ve ever noticed that it actually helps, you’re not imagining it. Your body has a built-in system for finding calm, and breathing is the key that unlocks it. When stress … Continue reading From Cortisol to Calm: The Physiology of Calm Breathing
Lower Body Negative Pressure: How Scientists Can Study Blood Loss with Everyday Household Items
Credit: iStock/Devonyu Have you ever wondered how scientists study the human body’s responses to extreme conditions such as severe blood loss? Science experiments don’t always involve expensive equipment, glass beakers and dangerous chemicals. In fact, one of the coolest experimental techniques in physiology requires just two common household items: a vacuum cleaner and a box … Continue reading Lower Body Negative Pressure: How Scientists Can Study Blood Loss with Everyday Household Items
How Blood Flow Reveals Our Cardiovascular Future
Credit: iStock/Jurgute Imagine you are watering a beautiful flowerbed with a garden hose. The water flows smoothly, nourishing each plant. Now, imagine if the hose gets kinked, causing a weak trickle of water. The flowers start to wilt, unable to receive the sustenance they need. In many ways, the blood vessels in our bodies work … Continue reading How Blood Flow Reveals Our Cardiovascular Future
Spotlight On: Statins
Credit: iStock/designer491 Heart disease remains the No. 1 killer in America, taking more lives per year than cancer and accidents combined. That’s frightening, but there is cause for optimism. For decades, statin drugs have been the gold standard in cholesterol management. Statins block the liver enzyme responsible for producing cholesterol, lower “bad” LDL levels by … Continue reading Spotlight On: Statins
The Irony of Exercise and Sudden Cardiac Arrest
Credit: iStock/PonyWang The irony of exercise is that while it works wonders for heart health, it actually increases short-term risk for experiencing sudden cardiac arrest (SCA) while you’re working out. The acute risk of SCA is higher when you’re unfit, when you’re engaging in high-intensity exercise, and you have underlying cardiovascular disease. How does fitness … Continue reading The Irony of Exercise and Sudden Cardiac Arrest
Bile Acids and Gut Microbiota Work Together to Regulate Blood Pressure
Credit: iStock/libre de droit Did you know that liver, our second largest organ, also plays a role in regulating our blood pressure? It has to do with bile acids, a substance that the liver cells make to help with digestion. Let’s dive in a little more to understand how it all works. Bile acids Bile … Continue reading Bile Acids and Gut Microbiota Work Together to Regulate Blood Pressure
GLP-1 Agonists: More Than Just Weight Loss
Conference attendees listen to a scientific session at the 2025 American Physiology Summit. Originally developed to treat diabetes, glucagon-like peptide-1 (GLP-1) agonists have recently dominated media coverage due to their potent effects on weight loss. Preliminary research has also suggested that these drugs may also have a protective role in other body systems and improve … Continue reading GLP-1 Agonists: More Than Just Weight Loss
From Tomatoes to Treadmills: What Scientists Are Discovering About Everyday Health
American Physiology Summit attendees view scientific posters. Credit: Erica Roth From record-breaking running speeds set by a 91-year-old to how your body responds to climate shifts, the American Physiology Summit brought together researchers exploring the science of health and life itself. Here’s how their findings presented at the annual meeting of the American Physiological Society could … Continue reading From Tomatoes to Treadmills: What Scientists Are Discovering About Everyday Health
What You Need to Know About the Gut Microbiota and High Blood Pressure
Credit: iStock The gut microbiome is an ecosystem of microbiota (microscopic organisms such as bacteria, viruses and fungi) in the intestine or gut. There are trillions of microbiota living in our guts. During disease or under unfavorable conditions, harmful bacteria in our digestive tract overgrow, and a balance between beneficial and harmful bacteria is lost. … Continue reading What You Need to Know About the Gut Microbiota and High Blood Pressure