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 bump into something like a bed or couch, it can hurt tiny blood vessels and blood can pool under your skin and leave visible marks. If you bruise easily, there are many reasons for this. 1.Age As you get older, you may notice more bruises and will slowly lose the fatty layer under your skin, and your blood vessels become weaker and more prone to injury. 2. Taking certain medications Certain medications (such as aspirin, ibuprofen and blood thinners) may hinder your ability to form blood clots, and some antibiotics may also make you prone to bruising. Other medications such as steroids can make your skin thinner and more fragile, which may also lead to more bruising. 3. Family history There may be family-related factors that make it more likely that bruising will occur. Also women have more delicate blood vessels, especially on the upper arms and thighs, where weak blood vessels can easily be injured and leave purple petechiae. 4. Too much sun exposure Purple spots may be found on the back of the hands or arms. Years of exposure to the sun can weaken the walls of blood vessels, which can make them vulnerable to injury and lead to bruising. 5, dietary supplements Easy bruising may 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 more difficult to clot after you hit something. 6. Low vitamin C levels 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 disease in which blood sugar levels are too high. Uncontrollably high blood sugar can also damage your blood vessels, making you more susceptible to injury. Vitamin K deficiency Vitamin K may not be given 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 such as leafy green vegetables. 9. Blood disorders In some cases, unexplained bruises may indicate that your blood is not working well. For example, if you have a disease such as hemophilia, it means you don’t have enough protein to help you form blood clots. Without these proteins, you may be prone to injury and often have other symptoms such as fever, chills and weakness.