Flea bites itch because the flea injects saliva into your skin while feeding. That saliva contains proteins your immune system reacts to, which triggers the release of histamine and causes the intense, persistent itch. To stop the itching quickly, wash the area with soap and water, apply a cold compress, and use an over-the-counter anti-itch … Read more
Yes, saliva does begin breaking down food in your mouth, but only for certain nutrients. Saliva starts the digestion of carbohydrates and fats while you chew. It does not break down proteins in any meaningful way. This first step matters more than most people realize, even though the bulk of digestion happens later in the … Read more
Yes, Lantus is a long-acting insulin. It is designed to release slowly and steadily over about 24 hours. This provides a constant baseline level of insulin in the body, which doctors call basal insulin. It is not the same as fast-acting insulin, which is used at mealtimes to handle the immediate rise in blood sugar … Read more
Waking up with aches and pains can make you wonder if something is different. Body soreness is a common early pregnancy symptom for many women, though it is not the most reliable sign on its own. The hormonal shifts of early pregnancy, especially rising progesterone and estrogen, can cause muscles to feel heavy, achy, or … Read more
Your pupillary distance (PD) is the measurement between the centers of your pupils. It tells an optical lab exactly where to place the optical center of each lens in your frames. If this number is wrong, even a perfect prescription can cause eye strain, headaches, or blurred vision. While an eye care professional measures PD … Read more
Height is one of the first things people notice about each other, and it is also one of the most common questions parents ask pediatricians. For adults, the question “how tall is it?” usually refers to a child, a teenager, or even a new building. But the most frequent use of this question in a … Read more
Fasting changes how your body manages fluids, nutrients, and red blood cells, and those changes can show up on a blood test. Yes, fasting can affect hemoglobin levels, but usually in ways that are temporary and often related to dehydration rather than a true loss of red blood cells. Short-term fasting typically causes a slight … Read more
Acne starts when a hair follicle becomes blocked. The blockage traps oil and dead skin cells inside the pore. Bacteria that normally live on your skin then multiply in that trapped oil, and your immune system responds with inflammation. That combination — oil, bacteria, and inflammation — is what creates a pimple. How Does Acne … Read more
Flu season arrives every year, but the specific strain circulating changes. Right now, the dominant types are influenza A H1N1 and H3N2, with influenza B appearing later in the season. These strains shift from year to year, which is why the seasonal vaccine is updated annually. Knowing which type is active helps you understand symptom … Read more
Putting toothpaste on a pimple is one of the most common home remedies around. Many people swear by it, but the truth is that it is not a safe or effective treatment for acne. While toothpaste can dry out a pimple, it also contains ingredients that irritate and damage your skin. Dermatoologists do not recommend … Read more