A common consequence of excessive sugar consumption is weight gain, which can lead to obesity and related health issues. High sugar intake can cause spikes in blood sugar levels, followed by crashes that increase hunger and cravings for more sugar. Consuming too much sugar can also lead to the development of insulin resistance, contributing to metabolic syndrome and type 2 diabetes. Moreover, excessive sugar intake is associated with an increased risk of heart disease and tooth decay, emphasizing the importance of moderation in dietary choices.