High Blood Pressure Not Linked to Weight?

by J. Foster

Fascinating research (published in the Epidemiology Journal) shows that the link between high blood pressure and BMI is a lot more tenuous that first thought.

The percentage of people who were overweight, defined as a BMI of 25 or more, increased from 39 percent to 60 percent between 1989 and 2004.

However, the association between BMI and BP decreased "substantially and consistently" between 1989 and 2004, irrespective of sex, (via)

The research was undertaken on the island nation of Seychelles (Indian Ocean) - where BMI rose over a 15 year period - but high blood pressure stayed at the same levels.

The researchers wonder whether the "impact of the overweight epidemic on cardiovascular disease might be less important than predicted."

This, again, highlights how BMI is not necessarily a reliable health indicator.

More like this in Health

9 Comments

Lose Weight With Me

There are other factors that can contribute to high blood pressure, such as stress, genetics, even exposure to cigarette smoke. I wonder how these other factors stack up on the island of Seychelles?

Brian

Reply
bookworm

Are there any facts in the research, which could compensate growth of BMI?

Reply
Quito

bookworm,

i don't understand your question, but taking a guess - other things have changed in the lives of the seychelles people, including the percentage in different occupations and in the use of antihypertensive medicine.

i think jim misinterpreted the study a little bit. what the researchers found was a weakening of the correlation between BMI and high blood pressure. There is a correlation (in a technical sense), but it has become less marked. It could be that high adiposity plus some environmental factor leads to hypertension. If the environmental factor decreased over the 15 years, then, the relation between BMI and hypertension would decrease. Indeed, this is what the authors suspect:

Our study suggests that there is a factor (or a set of factors), distinct from treatment of high BP, that attenuated the effect of overweight on high BP over time and, perhaps, on the incidence of cardiovascular events.
it's interesting that they concluded that the use of anterhypertensive medicine is not such a factor. they did this by showing the correlation of BMI to HP is the same across age groups, but the use of antihypertensive medicine is used much more by older people.

interesting work.

Reply
Jim
Quito said:
i think jim misinterpreted the study a little bit. what the researchers found was a weakening of the correlation between BMI and high blood pressure[...]
Bad choice of title - I admit. Interesting study tho' Reply
Spectra

High blood pressure can be caused by so many different factors...too much salt, smoking, poor diet, stress, not getting enough exercise, etc. It seems that most often, people that have all those risk factors are also overweight. It doesn't mean that fat people always have high BP or that people who have high BP are always fat. I will say though, that once I started a regular exercise program, my blood pressure was the first thing that got back to normal.

Reply
Wally

True. Factors that affect blood pressure could have a different effect on other places because of the way it happens. There should be a comparison between places where those factors are considered differently.

Reply
Alex

My grandfather is very thin. He is a person who is considered underweight. But he had high blood pressure too. And a minor stroke as well.

I'm supporting overweights. I want to give some early alarm for people who are overweight or underweight as well.

As long as you are not taking enough vegetables and fruits daily, you have a very high risk of having stroke.

Try to have one salad meal at breakfast everyday or during lunch(not recommended at dinner). Have fun with the fibre and nutritious meal. You'll see the results.

Thanks.

Reply
Yolanda

With all the studies conducted in different places, sometimes it's hard to come up with a conclusion, because the factors differ in effect.

Reply
Supplements Canada

The thing I hate most about BMI is someone who has a lot of lean body tissue could be considered overweight or even obese?

Reply

Add Your Comment

Required (nicknames or firstnames only)
Required (never displayed)
Optional



Most comments displayed immediately - some are held for moderation. (How to get an avatar)

©2003-2008 Diet-Blog - All Rights Reserved | Privacy Policy | Disclaimer