Are you really getting all the nutrients you need for optimum health? There are many different types of tests that help answer this question. In those tests, DNA synthesis and cell growth are measured, which ultimately reflects total metabolic function and how specific micronutrients and antioxidants are functioning.

You can also take the help of a physician via to know what different types of micronutrients your body needs.

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But, if you eat well, exercise, and take a "good" multivitamin, why would you need to have this test done? Consider the following five big reasons:

1) Biochemical individuality – Since each of us is metabolically and biochemically unique, the micronutrient requirements for one person may not be quite the same as another.

2) Absorption – 100% absorption of nutrients is not guaranteed even if you eat a balanced diet and take supplements.

3) Chronic Illness – multiple ailments like heart disease, diabetes, autoimmune disease, arthritis, and many others can both directly (from the disease process itself) and indirectly (through the medications and other treatments applied) affect micronutrient sufficiency.

4) Aging – micronutrient requirements at age 30 (like many things) are quite different from those needed at age 40, 50, and beyond. Absorption difficulties in particular are quite common as we age.

5) Lifestyle – Stress, prescription drugs, smoking, alcohol, level of exercise, and diet all impact micronutrient demands.