Your menstrual cycle does not operate in isolation from the rest of your body. After a COVID infection, long-distance travel, or major emotional upheaval, many women notice their periods arriving ...

Discover reasons for missed periods in your 40s, from perimenopause to stress, pregnancy, and health conditions. Learn signs and when to consult a doctor.

Influenza vaccination with or without concurrent COVID-19 vaccination was linked with longer menstrual cycles. Most menstrual cycles returned to pre-vaccination durations in the cycle after ...

Researchers have identified a "tipping point" about 2.7 million years ago when global climate conditions switched from being relatively warm and stable to cold and chaotic, as continental ice sheets ...

Your inability to focus isn’t a failing. It’s a design problem, and the answer isn’t getting rid of our screen time ...

Despite a decided shortage of placebo-controlled trials in humans to support that advice, the business of longevity is ...

In the top layers of soil, microbes digest dead wood and fallen leaves, while threadlike roots release carbon dioxide as they burn energy to stay alive and grow. Together, that CO₂ output is called ...

Understanding how massive stars evolve and return energy, momentum, and metals to their surroundings is a central problem in astrophysics, with far-reaching ...