This means even minor bumps that might have gone unnoticed years ago can now cause noticeable bruises.
For this reason, unexplained bruising is especially common among older adults.
2. Certain Medications

Some medications make bruising more likely because they affect the body's ability to clot blood.
Common examples include:
- Blood thinners
- Aspirin
- Some anti-inflammatory medications
- Certain antidepressants
- Long-term corticosteroid use
People taking these medications may notice bruises developing more easily than before.
3. Vitamin Deficiencies
Several nutrients play important roles in maintaining healthy blood vessels and proper blood clotting.
Deficiencies in nutrients such as:
- Vitamin C
- Vitamin K
- Iron
- Certain B vitamins
may contribute to easier bruising in some individuals.