Daily protein calculator for midlife
Protein requirements rise with age because ageing muscle responds less efficiently to the same amount, a phenomenon called anabolic resistance. Across the menopause transition, when muscle loss accelerates, that matters more. Expert groups working on ageing and muscle commonly propose 1.2 to 1.6 grams per kilogram of body weight per day for adults over 50, above the general adult recommendation of 0.8. Distribution across meals matters alongside the total.
Muscle mass declines from around the fourth decade and the rate accelerates across the menopause transition. Muscle is the largest consumer of glucose in the body and a significant contributor to resting energy expenditure, so losing it lowers the metabolic baseline and worsens insulin sensitivity together.
The widely quoted adult recommendation of 0.8 g/kg was derived to prevent deficiency in the general population, not to optimise muscle maintenance in older adults. Groups working specifically on ageing and muscle propose higher intakes, and this calculator uses that range.
One caution before you use it: anyone with reduced kidney function should not increase protein without medical advice, because protein load is handled by the kidneys and the right intake may be lower rather than higher.
Based on a published formula
Protein intake guidance for adults over 50 — A range proposed by expert groups on ageing and muscle, not a single official figure. Individual requirements depend on kidney function, activity and medical history.
Read more on this
Protein in menopause: why requirements rise with age
Muscle loss in menopause: the change underneath everything else
Strength training in menopause: why it moved to first place
Sources
- National Institute on Aging — Healthy eating
- The Menopause Society — patient education
- National Institute on Aging — Exercise and physical activity