Final answer:
The most concerning biometric that increases the client's risk for chronic disease is the A1C level of 7.2%, indicating diabetes, which heightens the risk of cardiovascular disease.
Step-by-step explanation:
Considering the provided biometrics for a client coming in for their first session, the aspect that is most concerning and increases her risk for chronic disease is her A1C level, which is 7.2%. The A1C test measures the average blood sugar (glucose) levels over the past 2 to 3 months and a level of 7.2% indicates that the client is in the diabetic range (6.5% or higher), putting her at increased risk of complications associated with diabetes, including cardiovascular disease.
While the blood pressure, LDL cholesterol, and waist-to-hip ratio are all within acceptable ranges, and her physical activity level is quite good, the elevated A1C is a significant concern that requires attention to manage her overall health.