Name a side effect of combined oral contraceptives.

• A. Weight loss
• B. Thromboembolism risk
• C. Increased energy levels
• D. Frequent headaches

Answer: (B)

Combined oral contraceptives (COCs) are associated with several potential side effects due to their hormonal composition, which includes both estrogen and progestin. One notable side effect is an increased risk of thromboembolism. This risk arises from the changes in coagulation factors and the overall impact on blood clotting that these hormones can have. The presence of estrogen, in particular, is linked to a higher likelihood of venous thromboembolism.

COCs can lead to an increase in clotting factors, which can contribute to conditions such as deep vein thrombosis and pulmonary embolism. It's essential for healthcare providers to assess personal and family histories of clotting disorders before prescribing these contraceptives, making this side effect particularly significant in clinical decision-making.

In contrast, weight loss, increased energy levels, and frequent headaches are not typically recognized as significant side effects related to the use of combined oral contraceptives. While some individuals may experience headaches as a result of hormonal fluctuations, it is not a definitive or notable effect compared to the increased thromboembolism risk. The primary concern with COCs lies in their thromboembolic potential, which underscores the importance of thorough patient evaluation and education regarding potential risks.