Raised insulin link to breast cancer in obese women

Raised insulin levels may account for much of the increased risk of breast cancer among obese women.

US researchers analysed blood samples from 1,651 postmenopausal women enrolled in the Women’s Health Initiative Observation Study. High fasting insulin levels were associated with a 46% greater risk of developing breast cancer.

High estrogen levels were also associated with an increased cancer risk. Levels of estrogen and insulin tend to be higher in obese women and this may largely explain the association between obesity and breast cancer, the researchers say.

Interventions aimed at cutting fasting insulin levels may reduce breast cancer risk among postmenopausal women, the researchers suggest. Previous studies have supported a role for insulin in the development of breast cancer, they point out.


Comment below and tell us what you think

Have you registered with us yet?

Register now to enjoy more articles and free email bulletins


Already registered?

Sign in

Follow Us:

Just published

£20 notes spread out

VAT trap for PCNs could strip millions of pounds from general practice

Tens of millions of pounds could be stripped from general practice because work carried...

Talking General Practice logo

Podcast: Is the BMA representing GPs effectively, why GPs face a pension tax hit, and views on the workload crisis

In our regular news review the team discusses representation of GPs, a new survey...

Man sleeping

NICE guidance on insomnia backs app to replace sleeping pills

Hundreds of thousands of people with insomnia could be offered treatment via a mobile...

Health worker prepares a dose of COVID-19 vaccine

JCVI backs autumn COVID-19 booster campaign for high-risk adults and NHS staff

Frontline health and social care staff and adults at increased risk of severe illness...

GP consultation

Government accused of 'misleading' claims on general practice workforce

GP leaders have accused the government of making misleading claims about the general...

Consulting room door

LMC calls for enhanced access to be scrapped after abuse forces practice to close reception

A Midlands LMC has backed a practice forced to close its reception desk after abuse...