ICT4D, AI4Good, Tech4Good, Math4Life. The X4Y convention is thoroughly established in this sector, which means a funder or partner reading D4L parses it correctly on first sight rather than reaching for a glossary. The obvious reading is data for life, and it isn’t hypothetical. Health data initiatives, research consortia and organisations working on making data serve people rather than platforms all use language of exactly this shape. Design for learning is a second live reading, used widely in education.

There’s substantial private money in ageing research now, and the organisations forming around it need names that sound scientific rather than promotional. This one does the work without trying. Expectancy carries serious analytical weight. Life expectancy is the headline measure of population health and the number driving pension policy, insurance pricing and development comparison, making it among the most cited statistics anywhere. The name suits a demographic research organisation, a public health body, an actuarial resource, a longevity research group, or a data project publishing population statistics.

Nutrition advice has a credibility problem, and a name that sounds academic helps more than any amount of copy. Most brands in the space sound like supplement companies. The -ology ending signals a body of knowledge rather than a fad. Dietology is the study of diet, constructed the way English builds every field name, and it’s also the standard term in several other languages, notably Russian and across Eastern Europe, where a dietologist is a recognised professional.