Conclusions: Associations with cancer risk or benefits have been claimed for most food ingredients. Many single studies highlight implausibly large effects, even though evidence is weak. Effect sizes shrink in meta-analyses.
In nutrition it's my personal conclusion after roaming pubmed. Any ingredient can be linked to problems or benefits. Eat many, eat few, move often, relax, think, hug and sleep.
"Is everything we eat associated with cancer? A systematic cookbook review" (open access)
https://academic.oup.com/ajcn/article/97/1/127/4576988
Conclusions: Associations with cancer risk or benefits have been claimed for most food ingredients. Many single studies highlight implausibly large effects, even though evidence is weak. Effect sizes shrink in meta-analyses.