Association of personalized dietary advice aiming to increase protein intake with macronutrient intake of community-dwelling older adults: a secondary analysis of the PROMISS RCT

Aim: This secondary analysis aimed to study how dietary advice focusing on protein intake impacts the intake of other (macro) nutrients and further explored how changes in macronutrient intakes and body weight were associated with observed increase in energy intake. Findings: This study showed a significant increase in carbohydrate intake relative to the control group, with no change in the intake of total fat, saturated fat, sugars, or dietary fiber. An increase in energy intake was associated with an increase in protein intake but not with relative weight gain. Message: Dietary advice to increase protein intake affects intake of carbohydrates and energy alongside the increase in protein intake among community-dwelling older adults with a low protein intake.