Prolonged fructose intake not linked to rise in blood pressure

Eating fructose over an extended period of time does not lead to an increase in blood pressure, according to researchers at St. Michael's Hospital.

A new study has found that despite previous research showing rose in humans immediately after they consumed fructose, there is no evidence fructose increases blood pressure when it has been eaten for more than seven days.

In fact, researchers led by Drs. David Jenkins and John Sievenpiper observed a significant decrease in diastolic blood pressure – the measure of blood pressure when the heart is relaxed between contractions– in people who had eaten fructose for an extended period of time.

"A lot of health concerns have been raised about fructose being a dietary risk factor for hypertension, which can lead to stroke, cardiovascular disease, renal disease and death," said Vanessa Ha, a Master of Nutritional Sciences student and the lead author of the paper. "However, we wanted to determine whether fructose itself raised blood pressure, or if the apparent harm attributed to fructose was simply because people are eating too many calories."

For example, we know that people are consuming more soft drinks than ever, but is it the fructose, the extra calories, or possible other factors that are adding to their illnesses, she said.

The study looked at the effect of all sources of fructose, including natural and crystalline. Fruits are the primary source of naturally occurring fructose, and the fructose molecule found in fruits and vegetables is the same fructose found in high-fructose corn syrup. Crystalline fructose is a processed form which has added water and trace minerals.

In the systematic review and meta-analysis, Ha and colleagues pooled the results of 13 controlled feeding trials which investigated the effects of fructose on blood pressure in people who had ingested fructose for more than seven days.

The 352 participants included in their analysis ate an average of 78.5g of every day for about four weeks. The U.S. average is an estimated 49g per day.

The paper is published in Monday's edition of Hypertension, a journal of the American Heart Association.

Provided by St. Michael's Hospital

not rated yet
add to favorites email to friend print save as pdf

Related Stories

The not-so-sweet truth about sugar -- a risk choice?

Nov 22, 2010

More and more people have become aware of the dangers of excessive fructose in diet. A new review on fructose in an upcoming issue of the Journal of the American Society of Nephrology (JASN) indicates jus ...

High fructose diet may contribute to high blood pressure

Jul 01, 2010

People who eat a diet high in fructose, in the form of added sugar, are at increased risk of developing high blood pressure, or hypertension, according to a study appearing in an upcoming issue of the Journal of the American So ...

Recommended for you

Can YouTube save your life?

6 hours ago

Only a handful of CPR and basic life support (BLS) videos available on YouTube provide instructions which are consistent with recent health guidelines, according to a new study published in Emergency Medicine Australasia, the jo ...

Doctors frequently experience ethical dilemmas

7 hours ago

(HealthDay)—For physicians trying to balance various financial and time pressures, ethical dilemmas are common, according to an article published Aug. 7 in Medical Economics.

AMGA: Physician turnover still high in 2013

7 hours ago

(HealthDay)—For the second year running, physician turnover remains at the highest rate since 2005, according to a report published by the American Medical Group Association (AMGA).

Obese or overweight teens more likely to become smokers

8 hours ago

A study examining whether overweight or obese teens are at higher risk for substance abuse finds both good and bad news: weight status has no correlation with alcohol or marijuana use but is linked to regular ...

Taking preventive health care into community spaces

9 hours ago

A church. A city park. An office. These are not the typical settings for a medical checkup. But a new nationwide study by the UCLA Center for Health Policy Research shows that providing health services in ...

User comments