US researchers say that women who suffer regular migraines may find some comfort to know that they have a considerable lower risk of developing breast cancer.

The researchers found a 30 percent lower risk for breast cancer in their study that included 3,412 women.

However, the researchers warned that more work was needed to confirm the link.

According an estimate, almost 30% women have to suffer at least one migraine in their lifetime.

Scientists have linked the condition (includes nausea and visual disturbance besides severe headaches) with fluctuating hormones levels.

Pregnancy and the use of the contraceptive pill that affect hormone levels can also cause noticeable changes in the frequency and severity of migraines.

The study is the first to look at whether these changes have an effect on the chances of developing breast cancer.

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A WHO report shows that life expectancy difference between the worlds’s poorest and richest countries can be more than 40 years.

The World Health Organization found huge inefficiencies and inequalities when it examined primary health care systems around the world.

The report urges for action to tackle unfairness and reinforce primary care.

WHO director-general, Margaret Chan says: “we have to take proper action and it is needed to focus on primary care to affect significant change.”

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