From daily habits to nutrition and sleep, explore informational guides on living a healthier life — backed by research and written for real people.
Colon polyps are growths on the inner lining of the colon or rectum. They form when cells multiply faster than normal. The exact cause is not fully understood, but it involves changes in cell DNA, inherited genes, and factors like age, diet, and inflammation. Most polyps are harmless, but some can become cancer over time. … Read more
If you buy glasses online, you may wonder if Glasses USA takes insurance. The short answer is: Glasses USA does not directly bill vision insurance plans like VSP or EyeMed. However, they accept Flexible Spending Account (FSA) and Health Savings Account (HSA) cards, and they provide the paperwork you need to file for out‑of‑network reimbursement … Read more
Feline hyperesthesia syndrome (FHS) is a poorly understood condition, and its root causes are not fully known. The most supported explanation is that FHS is a type of seizure disorder or a compulsive behavior problem, possibly triggered by stress, skin sensitivity, or underlying neurological issues. No single cause has been proven, and the condition likely … Read more
A swollen knuckle is a clear sign something is wrong. The most common causes are injury, arthritis, or infection. Minor sprains and bruises can be treated at home with rest and ice. But if the swelling comes with redness, warmth, or fever, a doctor needs to check for an infection. Knowing the cause guides what … Read more
To land on your midfoot while running, focus on three things: a quick cadence of about 170–180 steps per minute, landing with your foot directly under your hips, and a “light feet” cue that helps you avoid heel striking. The most effective drills include barefoot running on grass or turf, the “paw back” motion where … Read more
You sit down, do your business, and when you look in the toilet, the stool is covered with bubbles. This is a common sight, and the answer is simple: gas. Poop bubbles because gas gets trapped inside the stool and is released when it hits the water. Everyone passes gas—anywhere from 10 to 20 times … Read more
No, it is not possible to have truly purple eyes. Human eye color comes from the amount and type of melanin in the iris, and purple is not a color that melanin can produce. What looks like purple eyes is usually an optical illusion caused by light scattering, certain lighting conditions, or a medical condition … Read more
After ejaculation, some sperm can remain in the urethra and the vas deferens. This means that a second ejaculation shortly after the first—or pre-ejaculate—may contain sperm. The body does clear most sperm through urination and the natural flow of fluids, but the process is not immediate. Understanding what happens to leftover sperm matters for anyone … Read more
Women prescribed testosterone gel typically apply it to the inner thigh, outer thigh, lower abdomen (away from the navel), or upper arm. These areas have thin skin and good absorption, and they reduce the risk of accidental transfer to others. The gel should never be applied to the breasts, genitals, face, or any broken or … Read more
Most people associate a urinary tract infection with burning pain when they urinate. Bloating is not a classic symptom of a UTI. However, some people do report feeling bloated or having abdominal pressure during an infection. This usually happens because the inflammation spreads or because the body’s response to infection slows digestion. The direct answer … Read more