Final answer:
Approximately 1/3 of cancers may be linked to diet, according to some experts.
Step-by-step explanation:
Some experts estimate that about 1/3 (or approximately 33%) of cancers may be linked to diet.
Epidemiological studies have found that a high fat intake is associated with higher rates of breast, prostate, colon, and other cancers. Additionally, certain food substances, like alcohol, increase the risk of various cancers.
It's important to note that the evidence is still unclear, and more research is needed to better understand the specific relationship between diet and cancer risk.