The MIND diet and dementia risk: the trial versus the cohorts
Cohort studies tied the MIND diet to a lower risk of dementia. The one trial that tested it directly found no real difference after three years.
Healthy aging
Does creatine help memory? The cognition trials, by age
Creatine gives a small memory benefit and leaves overall thinking unchanged. In healthy older adults, the group most sold on it, the evidence is two blinded trials.
Keeping muscle after fifty: protein plus lifting, not either alone
Protein supplements on their own did nothing for muscle in adults over 50. Alongside lifting, the same protein added about half a kilo of arm and leg muscle and a firmer grip.
Nutrition after fifty: what actually changes
Older muscle builds less from the same meal, so protein targets go up after 65 - about 70 to 84 grams a day at 70 kg. The vitamin gaps the reviews found are about what people eat, and they could not measure absorption.
Vitamin B12 after fifty: why absorption drops and what the trials used
With age, eating too little B12 is rarely the problem. The step that frees B12 from food protein breaks: 38% of older adults with a worn-out stomach lining showed deficiency, against 15% of those with neither that nor an acid blocker.