In Mrs. Varner’s case – her BMI would be equal to 26.6 as her mass of 90 kg and height of 1.7 m satisfy this particular formula when plugged in accordingly. Based on this calculation she would fall into the “overweight” category since her BMI exceeds 25 but remains below 30 – thus suggesting that she should focus on incorporating healthier habits such as regular exercise and dietary changes if she wishes to reduce her risk levels associated with obesity-related conditions.

In conclusion, while there are certain limitations associated with using BMI as a measurement tool; it can still provide useful insights into general health trends and offer guidance when considering potential treatments for individuals like Mrs. Varner who may benefit from lifestyle modifications in order maximize their overall wellness