I think we all know (or think we know) that being obese or overweight isn't healthy. Generally it increases the chance of death and disease. This group or more likely to suffer metabolic problems such as insulin resistance, diabetes and more. But, what about those obese and overweight people that have perfectly normal metabolisms, are they dodging the risk?
First off, yes there are a proportion of people that are obese or overweight that don't actually show signs of insulin resistance or other metabolic issues. As the main increase in death is caused by these diseases it would be interesting to see if this group of people had the same mortality rates as 'normal' weight people.
A study was conducted and posted on 'Annals of Internal Medicine' has tried to answer that question. The study was a meta analysis which basically means they took lots of other studies that have lol at similar problems and used the results of each of them together in this one study. It they basically review the data that's out there in a way that's not been done before. This way they get to use a huge number of data points over a long period of time, and the costs are greatly reduced.
So they completed the meta analysis to find out if mortality rates did increase or not. The interesting thing is that they did still increase. Even if you are overweight or obese but don't exhibit signs of metabolic problems your chance of disease and death increases. One thing to bear in mind though is that the data they used looked at morality over a period of 10 or more years. This means they looked more at the longer term effects and chances of death.
What does this mean?
Well my thoughts in it are that just because you, or someone you know, has no indication of metabolic problems and could appear to be 'healthy' overweight or obese it's just not the case. Even if you / they exhibit no symptoms of these diseases the chance of mortality increases. So, tip of the day - don't be complacent when it comes to your health.