From about 50, muscle responds less to protein than it used to — so you need more of it, not less, just to hold on to what you have. This works out your daily target and lets you check a day against it.
Two questions, then a list you can tap as you eat.
Strength work raises how much protein you can use, so it raises the target.
25g is roughly a palm-sized piece of fish, chicken or tofu.
Tap an item each time you eat it. The total updates as you go.
Add it yourself. If you are not sure how much protein it has, a palm-sized piece of fish, chicken or tofu is about 25g, and a glass of milk is about 8g.
If you have kidney disease, do not use this target — a higher protein intake can be harmful, and your doctor should set your figure instead.
Targets follow PROT-AGE (Bauer et al., J Am Med Dir Assoc. 2013) and ESPEN (Deutz et al., Clin Nutr. 2014), which put healthy older adults at 1.0–1.2 g per kg of body weight a day, and at least 1.2 g with regular resistance exercise — above the 0.8 g general-adult RDA.
These are estimates for healthy adults, not a prescription. Portions vary a lot between stalls and kitchens, so treat the totals as a guide rather than a measurement.