Skipping breakfast can disrupt your body's natural blood sugar regulation. When you skip a meal, your body may release more glucose into your bloodstream to compensate for the lack of incoming energy. This can result in higher blood sugar levels, especially if you don't eat until later in the day.

Smoking is known to contribute to insulin resistance and can worsen blood sugar control. The chemicals in tobacco smoke can impair the function of insulin-producing cells in the pancreas, leading to an increased risk of type 2 diabetes. Smoking also increases the risk of cardiovascular complications, which can further impact blood sugar levels.

Consuming foods high in refined sugars causes a rapid spike in blood sugar levels. When you eat sugary foods, your body quickly absorbs the sugar, leading to a surge in blood glucose. Over time, consistently high sugar intake can contribute to insulin resistance, increasing the risk of type 2 diabetes.

Processed foods often contain high levels of refined carbohydrates, unhealthy fats, and additives. These foods can cause rapid spikes in blood sugar levels due to their high glycemic index. Additionally, processed foods might lack essential nutrients and fiber that help regulate blood sugar levels.

Regular physical activity helps your body use glucose for energy and enhances insulin sensitivity. A sedentary lifestyle can lead to insulin resistance, making it harder for your cells to take in glucose and causing blood sugar levels to rise. Exercise helps regulate blood sugar and improve overall metabolic health.

Alcohol can interfere with the liver's ability to release glucose into the bloodstream, leading to a drop in blood sugar levels shortly after consumption. However, over time, excessive alcohol consumption can contribute to insulin resistance, leading to higher blood sugar levels.