Answer:

weight

Answer	Crossword Clue
WEIGHT	Loser's concern?
WEIGHT	Gravity
WEIGHT	Jockey's concern

WEIGHT	What carats measure
WEIGHT	Postage determiner
WEIGHT	Importance.
WEIGHT	Heft
WEIGHT	Scale's reading
WEIGHT	Confidential statistic
WEIGHT	Medical chart info
WEIGHT	Something much watched

WEIGHT	Scale reading
WEIGHT	Shipping concern
WEIGHT	Import
WEIGHT	Pound, for example
WEIGHT	Boxer's stat
WEIGHT	Datum on a birth announcement
WEIGHT	Part of a BMI calculation
WEIGHT	Scientists have found a gene that regulates this

WEIGHT	Barbell
WEIGHT	Dumbbell, e.g.
WEIGHT	Baseball card stat
WEIGHT	Dieter's watchword
WEIGHT	Thing to watch