i do this, mostly. cursory glance, i like when there is a line graph with ranges. Vitamin D is one i ignore the chart and just aim for 105 - you're considered fine at like 40 or 50. I like not being sick though, a lot.
Last year i got sick three times during the summer, the *summer*, so i started slamming vitamin D, at least 10k IU a day, i average ~14000 IU a day. Haven't been sick all year, from something communicable.