Stats and my feelings on BMI calculations

Mar 26, 2009

I was responding to a post a few minutes ago and thought I would put this on my blog.  I might put it on my facebook blog as well.  Not sure yet, deciding still.

I asked my surgeon why he wanted me at 250 when I am only 5'6" because that would place me as obese still.  He did a bodpod to check my lean body mass/fat ratio.  (They normally do this preop, 6 months and a year but they couldn't shut the door preop.)  I had it done in February and I have 176lbs of LBM (lean body mass), which I guess is everything but fat and hair.  So I have stopped looking at BMI, ideal weight ranges for people based on government and medical agencies and started calculating my body fat based on 176lbs of LBM (lean body mass).

According to my calculations I had 394lbs of body fat.  Now I have 202 lbs of body fat.  Surgeon wants me at 250lbs, that means if I do not have any changes in LBM I should be at 29%, which seemed odd for me but the surgeon said I would have an extra 25-30 lbs of skin.  If I subtract the skin from the figures I would weigh 220-225 and be at  20-21%, which is within the healthy range even though I would still be considered obese with a BMI of like 40.  I took my height 66 inches, plugged in my LBM and I was overweight so that crap they give you at most doctors offices is worthless.

   DATE     WT/LBS    BMI     BODY FAT
10/16/08     570         92            69%          (day I got out of the hospital) 
10/24/08     525         84.7       
10/28/08     503         81.2
10/31/08     499         80.5
11/14/08     489         78.9
11/20/08     483         78
11/24/08     480         77.5
12/03/08     477         77
12/08/08     471         76
12/09/08     469         75.7
12/15/08     463         74.7
12/30/08     453         73.1
01/14/09     440         71
01/26/09     430         69.4
02/02/09     425         68.6
02/10/09     420         67.8
02/13/09     411         66.4
02/23/09     403         65
02/26/09     399         64.4
03/07/09     392         63.3
03/20/09     378         61            53%


If anyone wants to know how to figure your actual body fat percentage you need to know your height, and LBM and the rest is fairly easy.

-Jaime

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