Last weekend at Crossroads Church the pastor mentioned something about dehydrating as we get older, that the proportion of our body weight that is water decreases with age. Evangelina and I decided to put it to the test.
Watson formula for men
2.447 – (0.09145 x age) + (0.1074 x height in centimeters) + (0.3362 x weight in kilograms) = total body weight (TBW) in liters
Sid
2.447 - 4.39 + 18.28 + 23.6
Height 67" = 170.2cm
Weight 154.4# = 70.2kg
Age 48y
Tbw 39.9L
56.9% water
Watson formula for women
–2.097 + (0.1069 x height in centimeters) + (0.2466 x weight in kilograms) = total body weight (TBW) in liters. [confirmed with various sources: age not a factor!]
Evangelina
-2.097 + 14.6 + 8.24
50" = 137cm
73.4# = 33.4kg
Age 11y
Tbw 20.7L
62.1% water
At first I miscalculated my own percent body water to be 69%, admittedly to a great deal of self- satisfaction especially as it exceeded Evangelina's. Alas, on rechecking my work I found I was wrong. It makes sense of course: fat contains less water than lean muscle.
