with "half a litter of veg soup plus 2 eggs plus 2 sausages, some bread, some nuts"
you likely have a borderline underweight BMI and little-to-no muscle to speak of.
muscle is extremely important for maintaining mobility and independence as you age. with this diet, even with training, it will be impossible to build any. past 30, without outside intervention, humans lose around 10% of muscle mass per decade. what happens when you're 70 and can barely walk after losing what little muscle you have? best have a reserve...
Metabolism also slows with age, calorie requirements correspondingly drop and so should food intake really. There's a reason (healthy) seniors tend to be on the skinny side. Also something-something-three-score-and-ten.
> There's a reason (healthy) seniors tend to be on the skinny side.
and the healthier ones are similarly lean but more muscular.
also, while caloric needs drop, protein needs rise as older people show blunted anabolic responses to protein and thus need more protein to maximize muscle protein synthesis
what, ~50g? that's barely the RDA. hardly enough to build muscle. there are almost linear gains up to 100g for most people, with further potential growth gains to be had up until around 130g.
muscle is extremely important for maintaining mobility and independence as you age. with this diet, even with training, it will be impossible to build any. past 30, without outside intervention, humans lose around 10% of muscle mass per decade. what happens when you're 70 and can barely walk after losing what little muscle you have? best have a reserve...