At 84, Veronica Sintchaya retired from teaching in 1996, three years after her husband’s death. Sintchaya belongs to Nthambi Small-scale Farmers’ Club in Chimpesa Village, Traditional Authority Onga in Chiradzulu District. The octogenarian has the gait and fitness of a 50-year-old. Her secret? “A balanced diet comprising the six food groups,” she says. “Every morning,