Diseases & Conditions Archive

A 2025 study suggested that people with sedentary jobs are at higher risk of developing insomnia, which can persist for many years.

Nosebleeds are common, and dry air is the most prevalent cause. Other triggers include allergies, blood-thinning medications, or a deviated septum. People with frequent, heavy nosebleeds may need evaluation for a more serious underlying condition.

Headaches happen to people every day, and about 4% of Americans report being bothered a great deal by them in the past three months. Only a tiny percentage of headaches indicate a serious underlying problem. Red-flag signs include headaches occurring with other symptoms; new headaches in people over 50; headaches that get worse with exercise, sex, coughing, or lying down; and "thunderclap" headaches that involve rapidly worsening head pain. People experiencing these signs should seek prompt medical attention.

Postural orthostatic tachycardia syndrome (POTS) affects up to a million Americans, more than three-quarters of whom are women. A main feature of POTS is an intolerance to being upright. Symptoms include heart rate spikes, palpitations, dizziness, and fatigue. Risk factors include recent viral infection, surgery, concussion, or a long period of inactivity. POTS symptoms can be managed through exercising, drinking more fluids, increasing salt intake, wearing compression garments, and using counter-pulsation poses.

Older people with atrial fibrillation are sometimes advised to stop taking clot-prevention drugs due to fears about bleeding. But a 2025 study suggests that the risk of stroke and heart attack from stopping the drugs outweighs the risk of bleeding.

With ticks thriving in a wider geographic range, appearing earlier and sticking around later, it's important to stay vigilant about protecting yourself against ticks that cause Lyme disease and other illnesses. Learn some steps you can take to avoid tick bites.

Monitoring daily step count can encourage people to be more active. When it comes to assessing fitness or risk for major illnesses, though, is a new measurement that combines both average steps and heart rate better?

A 2024 study observed that people who eat at least five servings of dark chocolate each week were less likely to develop type 2 diabetes.