The results of a complete fasting lipid panel blood test will indicate whether or not you have high triglycerides. In most cases, you also will have high cholesterol.
Your doctor likely will implement a treatment plan, which may include medication, diet and exercise. You also may want to consult with a dietitian or nutritionist to learn how to reduce the amount of fat in your diet.
In addition, you may want to increase your activity level. Join a gym, consult with a personal trainer, or meet up with a friend for a daily bike ride or brisk walk around the neighborhood.