Should i avoid eating food rich in natural estrogen when diagnosed with uterine cancer?

Preferable: It is preferable that you do. Uterine and hormone-positive breast cancers are estrogen sensitive diseases. Also avoiding over the counter meds/herbs rich in Estrogens is advisable.

Phytoestrogens : According to the acog practice bulletin phytoestrogens are not well absorbed by the body. So, it is not a problem. In fact, a large study showed women with stage i or ii endometrial cancer can safely take estrogen replacement.

Estrogens: While most "natural" Estrogens in foods are present in low levels, certain cancers, such as estrogen-positive breast tumors and some uterine tumors are enhanced by circulating estrogen levels, so it is best to limit their ingestion.