When is Coffee Harmful?

According to Dr. Oksana Mikhailova, an endocrinologist, coffee is not recommended when experiencing headaches, dizziness, or nausea. This is because it can cause high blood pressure, increase heart rate, and stimulate the nervous system. She states, "If symptoms such as headaches, dizziness, and nausea are related to high blood pressure, consuming caffeine in this case could be dangerous, as it will further elevate blood pressure, potentially leading to a hypertensive crisis." Furthermore, caffeine can exacerbate conditions of nervous stress, anxiety, and sleep disorders. Additionally, coffee is not recommended in cases of irregular heartbeats and palpitations, as it may reduce the effectiveness of medications being used.