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Anxiety

Anxiety is a feeling of worry, nervousness, or unease that arises in response to stress or perceived threats. It is a normal and often helpful emotional response that can prepare the body to deal with challenges or danger. However, when anxiety becomes persistent, excessive, or disproportionate to the situation, it may interfere with daily functioning and be classified as an anxiety disorder.

Common symptoms of anxiety include restlessness, rapid heartbeat, muscle tension, difficulty concentrating, irritability, and sleep disturbances. Physical symptoms can also include sweating, nausea, or shortness of breath. Anxiety disorders come in various forms, such as generalized anxiety disorder, panic disorder, social anxiety disorder, and specific phobias, each with its own set of triggers and characteristics.

The causes of anxiety are complex and can involve a combination of genetic, environmental, psychological, and neurological factors. Life events, trauma, chronic stress, or imbalances in brain chemistry may all contribute to its development. Diagnosis is typically made through clinical evaluation, and treatment options include therapy, medications such as antidepressants or anti-anxiety drugs, lifestyle changes, and stress-reduction techniques like mindfulness or exercise.

While anxiety can be overwhelming, it is also highly treatable. Increased awareness, early intervention, and a variety of therapeutic approaches can help individuals manage symptoms and improve quality of life. Ongoing research continues to deepen our understanding of anxiety and enhance treatment strategies.

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January 15, 2026

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Childbirth depends not just on hormones, but on the uterus’s ability to sense physical force. Scientists found that pressure and stretch sensors in uterine muscles and surrounding nerves work together to trigger coordinated contractions. When ...
Scientists at Tufts have found a way to turn common glucose into a rare sugar that tastes almost exactly like table sugar—but with far fewer downsides. Using engineered bacteria as microscopic factories, the team can now produce tagatose ...

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