From the article,
"Maddocks expects the cancer-diet field will take years to move from “piecemeal forays” to a clear understanding of each diet’s pros and cons. Establishing that a specific diet works well enough to become part of routine clinical care also will take time. But Zitvogel says fighting cancer with diet is no longer a fringe idea. The field is at the start of “a new era where people will really take diet seriously into account,” she says."
Kaiser, Jocelyn, 2021, "A Plateful of Medicine", Science; Vol 372, Issue 6537, 20-23, DOI: 10.1126/science.372.6537.20.