Kane Tanaka has set her sights on becoming 120 next year, as figures show the number of young adults in Japan in steep decline

The world’s oldest person has celebrated her 119th birthday in Japan, saying she is determined to extend the record by another year.

Kane Tanaka, who has a weakness for fizzy drinks and chocolate, marked the milestone on Sunday with staff at the nursing home where she lives in Fukuoka prefecture, south-west Japan, according to media reports.