What trials in older adults show about creatine, strength and muscle, EFSA’s over-55 finding, how much to take, kidney test cautions and who should check with a doctor first.
Who needs vitamin B12, why absorption falls with age and dose, NHMRC/NIH/EFSA intakes, forms compared, medicine cautions and how to read the label.
What changes in the heart with age, what WHO and heart guidelines recommend, the numbers to check and a simple weekly checklist.
Which sleep changes are a normal part of ageing and which are worth a GP visit, plus the simple habits with the best evidence and a two-week sleep reset.
What sauna research really shows: the Finnish heart studies, what is thin or oversold, sauna types, safe step-by-step use and who should ask a doctor first.
How strength training affects bone density, which exercises load bone, a starter programme, calcium needs by country, and safety with osteoporosis.
What the guidelines and step-count research say about sitting less and moving more, why 10,000 steps is a myth, and simple habits that fit an ordinary day.
What normally changes in sleep with age, how to tell normal from a problem worth checking, why it matters for recovery, and a practical plan.