To begin with Fast food increases your risk for weight gain, obesity and development of type 2 diabetes. A Research by Mark Pereira, Ph.D., published in "Lancet" in 2005 discovered that fast food consumption is strongly associated with weight gain and insulin resistance and an increased risk of obesity and type 2 diabetes. The research found that a person who consumes fast foods at least twice per week gains an extra 4.5 kg of body weight and has a two-fold greater increase in insulin resistance than a person who consumes fast foods less than once per week. Insulin resistance is the diminished ability for your cells to connect to insulin in your blood to reduce sugar levels.
Secondaly dietary intake of saturated and trans fats builds plaque inside your arteries, which may block your heart from receiving oxygen-rich blood and increase your risk of coronary artery disease, heart attack and death. Fast foods contain high amounts of cholesterol, saturated and trans fats that have powerful l effects on increasing your risk of coronary artery disease, according to research by Steen Stender, M.D., Ph.D., published in the "International Journal of Obesity" in 2007. The research found that fast foods are often served in large portion sizes and that the actual nutritional content of the same menu items may differ between outlets. The research ended by saying that food quality and portion sizes need to improve