Median BMI For Women Changed by age - agree or not??

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Per http://www.halls.md the BMI Median Body Mass Index for women based on age is as follows:
20-29 years old 24.4
30-39 years old 26.4
40-49 years old 27.8
50-59 years old 28.4
60 and up 27.5

Dr. Hall believes :
Women tend to believe they look at their best at values between 20 to 22 and men are usually satisfied with a BMI of 23 to 25 between age 17 to 22, you life expectancy is longer than average. You don't need to lose weight.

Don't worry Be Happy. It is unhealthy to have anxiety over a less-than-perfect body image. And, if the calculator's describe your body seems wrong for you trust your own judgment. A healthy mental attitude is just as important as physical fitness.

What do you think about his theory???