(HealthDay News) -- If you don't carefully monitor your diet, here are a few warning signs that you should, courtesy of the American Academy of Family Physicians:

• If your doctor has warned you about health problems or risk factors that can be controlled or improved with a better diet. These conditions include high blood pressure or high cholesterol.
• If you have a family history of heart disease, osteoporosis, diabetes or cancer.
• If you are overweight or obese.
• If you have unanswered questions about the foods you eat, and whether you should take vitamins or other supplements.