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Dairy products do not lead to alterations in body weight or fat mass in young women in a 1-y intervention . BACKGROUND Previous results suggested that increased intake of dairy calcium is associated with reduced weight and fat mass . OBJECTIVE The purpose of this study was to determine whether long-term increases in consumption of dairy calcium alter body weight and fat mass in young , healthy women . DESIGN We used a randomized , 1-y intervention for dairy calcium . Subjects were 155 young ( aged 18-30 y ) , healthy , normal-weight women with intake of dietary calcium < 800 mg/d and energy intake < /= 2200 kcal/d . Women were randomly assigned to 1 of 3 groups : 1 ) control : continue established dietary intake ; 2 ) medium dairy : substitute dairy products to achieve intake of calcium of approximately 1000-1100 mg/d and maintain isocaloric intake ; 3 ) high dairy : substitute dairy products to achieve intake of calcium of 1300-1400 mg/d and maintain isocaloric intake . The main outcome measures were 1-y changes in body weight ( in kg ) and fat mass ( in kg ) . One hundred thirty-five women completed the trial . RESULTS Mean intakes of calcium during the intervention were 742.4 +/- 321.5 , 1026.4 +/- 311.3 , and 1131.29 +/- 337.2 mg/d for the control , medium-dairy , and high-dairy groups , respectively ( P < 0.0001 ) . No significant differences were observed in the mean 1-y change in body weight between the control , medium-dairy , and high-dairy groups ( 0.8 +/- 2.8 , 0.7 +/- 3.0 , and 1.5 +/- 4.1 kg , respectively ; P = 0.45 ) . No significant differences were observed in the mean 1-y change in fat mass between the control , medium-dairy , and high-dairy groups ( -0.5 +/- 2.5 , 0.3 +/- 2.7 , and 0.5 +/- 3.5 kg , respectively ; P = 0.26 ) . CONCLUSION Increased intake of dairy products does not alter body weight or fat mass in young , healthy women over 1 y .
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Intervention_Other
Dairy products
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Intervention_Pharmacological
dairy calcium
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Intervention_Pharmacological
dairy calcium
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Intervention_Pharmacological
dietary calcium
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Intervention_Control
control : continue established dietary intake
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Intervention_Other
intake of calcium of approximately 1000-1100 mg/d
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Intervention_Other
isocaloric intake
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Intervention_Other
intake of calcium of 1300-1400 mg/d
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Intervention_Other
isocaloric intake
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Intervention_Pharmacological
dairy products
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Outcome_Physical
body weight or fat mass in young women
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Outcome_Physical
reduced weight and fat mass
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Outcome_Physical
body weight and fat mass in young , healthy women
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Outcome_Physical
1-y changes in body weight ( in kg ) and fat mass ( in kg )
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Outcome_Physical
intakes of calcium
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Outcome_Physical
mean 1-y change in body weight
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Outcome_Physical
mean 1-y change in fat mass
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Outcome_Physical
body weight or fat mass in young , healthy women over 1 y
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Participant_Sex
young women
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Participant_Age
young
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Participant_Age
healthy women
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Participant_Sample-size
155
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Participant_Age
18-30 y
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Participant_Condition
healthy , normal-weight
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Participant_Sample-size
One hundred thirty-five
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Participant_Age
young
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Participant_Age
healthy women