Health and Lifestyle

Heart and Blood Vessels As people age, blood vessels get stiffer. This makes the heart work harder to move blood through the body. Over time, this…

How Bacteria Become Resistant Bacteria can change in ways that reduce or block the effect of antibiotics. These changes may protect the bacteria or allow them…

Understanding What Makes Food Organic Organic foods come from farms that follow special rules for growing crops and raising livestock. These rules limit or ban the…

Muscle-Building Steroids Anabolic-androgenic steroids are synthetic drugs designed to mimic testosterone, the main male hormone. Athletes sometimes use them to increase muscle size and strength. These…

Overview Managing allergies during pregnancy can feel more difficult, but safe options exist. Pregnancy may change how your body reacts to allergens, so symptoms of allergic…

Overview of Key Nutrients Children need a balance of different nutrients to grow steadily and stay healthy. The main nutrients are protein, healthy fats, carbohydrates, vitamins,…

Understand Possible Problems Getting a piercing can carry health risks. Some people react to the metal in jewelry, especially if it contains nickel. An allergic reaction…

What Counts as Being Unfaithful? Cheating looks different for every couple. For some, it means having sex with someone else. Others might feel that sharing close…

How Laughing Helps Ease Stress Laughing out loud or sharing a simple smile does more than just create a happy mood—it helps people manage stress more…

Does Every Medication Change Breast Milk? Most medications that nursing parents take enter breast milk, but usually in small amounts. Many of these drugs reach levels…