Consuming foods high in sugar can cause a rapid spike in blood sugar levels, resulting in a quick burst of energy. However, this is usually followed by a crash as insulin is released to lower the blood sugar levels. This rollercoaster effect can lead to fatigue, poor concentration, and mood swings. Additionally, a diet high in added sugars and processed foods has been associated with an increased risk of developing depression and anxiety. It is important to maintain a balanced diet that includes complex carbohydrates and limit excessive sugar intake to stabilize energy levels and support overall mood.