Heart2Heart with Madiha

Most people think of sunlight as something that helps us produce vitamin D or improves our mood. But researchers are discovering that the first rays of morning sunlight may also play an important role in protecting your heart. Your cardiovascular system follows a natural 24-hour rhythm known as the circadian rhythm. This internal clock influences everything from blood pressure and heart rate to hormone production and metabolism. Morning sunlight is one of the strongest signals that keeps this clock running on time. Your Heart Has a Daily Schedule The heart doesn't work at the same intensity throughout the day. Blood pressure naturally begins to rise shortly before you wake up, helping prepare your body for activity. Heart rate also increases as the day begins. When your circadian rhythm is disrupted (whether from late-night screen use, shift work, or inconsistent sleep schedules) these normal patterns can become irregular. Studies have linked circadian disruption to higher risks of...

When we think about protecting our hearts, we usually focus on diet, exercise, cholesterol, or blood pressure. Rarely do we think about sound. Yet every day, millions of people are exposed to traffic, construction, airplanes, loud workplaces, televisions, and constant notifications from electronic devices. While these noises may seem like little more than an annoyance, researchers are discovering that long-term exposure to excessive noise can quietly place significant strain on the cardiovascular system. Your heart doesn't just respond to what you eat or how active you are, it also responds to the environment around you. Your Body Treats Loud Noise as a Threat The human brain is designed to react quickly to unexpected or persistent loud sounds. Even if you become accustomed to the noise, your body may still interpret it as a potential danger. This activates the "fight-or-flight" response, causing the release of stress hormones such as adrenaline and cortisol. These hormon...