Lifestyle benefits vary across four disease patterns after 70

Walking independently is one of the hinges of an older person's autonomy. In a study of 1,199 people over 70 across 11 European countries, a lifestyle program reduced the combined risk of mobility impairment or death by 22%—but the benefit depended on the diseases participants carried together.

The researchers, led by teams at Karolinska Institutet and Università Cattolica del Sacro Cuore in Rome, studied older adults with physical frailty, reduced muscle mass and at least two chronic conditions. Participants were randomly assigned either to physical activity, dietary advice and technical support, or to information about healthy aging. The analysis found four broad patterns: nonspecific, psychiatric, cardiovascular and metabolic, and respiratory.

The strongest result was concentrated in one group. Among participants with a psychiatric disease pattern, the intervention reduced risk by 35%. People in the nonspecific group, whose disease burden was milder, also benefited. For those with cardiometabolic or respiratory multimorbidity, researchers observed essentially no benefit.

That difference changes how the result could be used. Counting chronic conditions alone may not be enough to decide who is most likely to benefit from a prevention program; the combination of conditions could help clinicians target support more precisely. For older adults, that could mean directing the same tools—movement, food advice and technical assistance—to people according to their disease profile rather than applying one uniform expectation.

The finding is promising but not settled. The researchers describe it as a post hoc analysis of a clinical trial, meaning the disease-pattern comparison was examined after the trial data were collected. They say the results need confirmation in other studies and in broader groups of older people.