Background and aim This study evaluates the associations between dietary intakes and
circulating blood levels of methionine, choline or betaine and breast cancer risk, which …

Few epidemiological studies have evaluated the association of choline and betaine intake
with breast cancer risk and the results remain inconsistent. This study aimed to assess the …

Background: Choline and betaine, similar to folate, are nutrients involved in one-carbon
metabolism and hypothesised to reduce breast cancer risk. No prospective study among …

Purpose We investigated prospectively the relationship between dietary intakes of
methionine and B vitamins associated with one-carbon metabolism and breast cancer risk …

Purpose Choline and betaine are important for DNA methylation and synthesis, and may
affect tumor carcinogenesis. To our knowledge, no previous study has examined the …

Choline and betaine provide methyl groups for one-carbon metabolism. Humans obtain
these nutrients from a wide range of foods. Betaine can also be synthesized endogenously …

Choline and betaine are essential nutrients involved in one-carbon metabolism and have
been hypothesised to affect breast cancer risk. Functional polymorphisms in genes …

Background: Epidemiological studies evaluating the association of vitamin B 6, vitamin B 12
and methionine with breast cancer risk have produced inconsistent results. Methods …

A number of human and animal in vitro or in vivo studies have investigated the relationship
between dietary choline and betaine and cancer risk, suggesting that choline and betaine …

Background & aims Evidences suggest possible link between betaine and choline, methyl
group donors, and cancer progression. We examined the association between choline and …