Why am I prone to bruising? What is a bruise? You may notice a purple bruise, yet you have no idea where it came from, bruises are common. When you hit something like a bed or sofa, you can injure tiny blood vessels and blood can pool under your skin and leave visible marks. If you bruise easily, there are a number of reasons why. 1.Age As you get older, you may notice more bruising and will slowly lose the layer of fat underneath your skin, weakening blood vessels and making them susceptible to injury. 2. Taking certain medications Certain medications (such as aspirin, ibuprofen, and blood thinners) can impede your ability to form blood clots, and some antibiotics can make you bruise easily. Other medications such as steroids can make your skin thinner and more fragile, which can also lead to more bruising. 3. Family history There may be family-related factors that make you more prone to bruising. Also women have more delicate blood vessels, especially on the upper arms and thighs, and weak blood vessels can be easily injured and leave purple bruises. 4, too much sun may be found on the back of the hand or arm purple spots, years of exposure to the sun will weaken the walls of the blood vessels, which will make them vulnerable to injury, resulting in bruising. 5, Dietary supplements Bruising easily can be a side effect of some over-the-counter dietary supplements, such as ginkgo, ginseng, and garlic, which can thin your blood and make it harder to clot after you hit something. 6, Low in Vitamin C This essential vitamin helps make collagen, an important protein that makes blood vessels healthy. If you don’t get enough vitamin C in your diet, you may find yourself bruising easily. Low vitamin C levels are not common, but are more likely to occur if you smoke. 7. Diabetes Diabetes is a condition in which blood sugar levels are too high. Uncontrolled high blood sugar can also damage your blood vessels, making you more susceptible to injury. 8, Vitamin K Deficiency Vitamin K may not get as much attention as other vitamins, but it plays an important role in blood clotting. If you don’t get enough vitamin K, you could get injured. Nonetheless, most healthy adults get enough of this vitamin from foods like leafy greens. 9. Blood Disorders In some cases, unexplained bruising may indicate that your blood is not functioning well. For example, if you suffer from a condition such as hemophilia, it means that you don’t have enough proteins to help you form blood clots. Without these proteins, you may be prone to injury, often accompanied by other symptoms such as fever, chills and weakness.