A diet high in fructose increases the risk of developing high blood pressure (hypertension), according to a paper being presented at the American Society of Nephrology’s 42nd Annual Meeting and Scientific Exposition in San Diego, California. The findings suggest that cutting back on processed foods and beverages that contain high fructose corn syrup (HFCS) may help prevent hypertension.
Over the last 200 years, the rate of fructose intake has directly paralleled the increasing rate of obesity, which has increased sharply in the last 20 years since the introduction of HFCS. Today, Americans consume 30% more fructose than 20 years ago and up to four times more than 100 years ago, when obesity rates were less than 5%. While this increase mirrors the dramatic rise in the prevalence of hypertension, studies have been inconsistent in linking excess fructose in the diet to hypertension.
Fructose is starting to look like a more plausible villain than fat. Perhaps Diane Keaton in Sleeper was right to praise "Deep fat".
Diana Jalal, MD (University of Colorado Denver Health Sciences Center), and her colleagues studied the issue in a large representative population of US adults. They examined 4,528 adults 18 years of age or older with no prior history of hypertension. Fructose intake was calculated based on a dietary questionnaire, and foods such as fruit juices, soft drinks, bakery products, and candy were included. Dr. Jalal’s team found that people who ate or drank more than 74 grams per day of fructose (2.5 sugary soft drinks per day) increased their risk of developing hypertension. Specifically, a diet of more than 74 grams per day of fructose led to a 28%, 36%, and 87% higher risk for blood pressure levels of 135/85, 140/90, and 160/100 mmHg, respectively. (A normal blood pressure reading is below 120/80 mmHg.)
I've gradually become more concerned about fructose. Robert H. Lustig, MD, a UCSF Professor of Pediatrics in the Division of Endocrinology, takes a look at the harms that come from excessive fructose consumption. Note that he says we are eating an order of magnitude more fructose than our ancestors did historically.
Is high fructose consumption from high fructose corn syrup and sucrose sugar responsible for the obesity epidemic? He says our ancestors got about 15 grams per day. Well, a medium sized apple has about 10 grams. So 2 apples will give you more fructose than most of our ancestors consumed. Our bodies are probably not well adapted to handle 150 grams of fructose per day.
Anyone know of a good detailed list of fructose levels in various foods? I've only found short lists of fructose levels in foods.
|Share |||Randall Parker, 2009 October 29 11:00 PM Aging Diet Heart Studies|