Many people get shaky during the day. This is mainly because they skip meals and then eat the wrong kind of food. This roller coaster ride can become a very viscous cycle. Over a period of time, left unattended, it can lead to major health problems. Adult onset diabetes is a result many times of poor nutritional choices growing up.
Many diabetics are overweight.
They consume far too many simple carbohydrates. You have to eat more simple carbs to feel full. Complex carbs are found in nuts, whole grains, fruits, and vegetables. They make you feel fuller and thus a person does not have to eat as much. You have to do a little homework to find what foods have complex carbohydrates in them.