The short answer, No, it doesn't Double in weight, but it does gain weight.
The long answer, a mattress does gain weight as the years pass. It absorbs the fluids that your body excretes (oil and sweat) as well as dead skin cells. Another weight factor, is that the mattress becomes host to microscopic dust mites, which live in the dust and feed on the skin cells. These then perform their normal biologic functions, and their excrement adds its weight to the mattress as well.
With all these factors, over 10 or so years, a 90 pound mattress can gain around 20 pounds.
it can be harmful to your health, yes, because dust mites can stay in your mattress and they can make very disgusting odors and wastes in your mattress and who would want to sleep in that filth?
assuming "bed" means mattress it should be replaced every 10 years because of body depression & skin mites.
One of the problems with all bedding that cannot be washed, like pillows and mattresses, is that they accumulate bacteria and parasites. The most common parasites are not bed bugs, which can cause a bad infestation, but dust mites. They are so small that we cannot see them, but after several years our pillows and mattresses can actually double in weight where that increase is from the accumulation of dead bug bodies.
foam mattress is better anyday. example - SLEEPWELL mattress has varieties of FOAM mattress where they give guarantee for more than 5 years(DUET) 10 years(GOLD PLUS) or 15 years(PEARL PLUS). If your queation is about heating problem then you should be panic if you buy some unbranded foam mattress. All the SLEEWELL mattresses are highly treated with special chemicals in order to avoid heating problems, dust mites, and etc. On the other hand COIR mattresses are like patient mattresses and its a complete myth that coir is only good for back problem. All the coir mattresses has a life of about 2, 3 or maximum 4 years unlike FOAM mattresses.
Colgate Mattress moved from the Bronx many years ago to Georgia.
50 years
I have been dealing with beds for 10 years. A mattress pad should go over the pad and under the sheets if you want to preserve it.
There is many steps to can take to reduce the amount of dust mites in your home. The first step would to be, buy a new mattress if your current one is over eight years old. Your sheets need to be washed frequently (once a month). Also, cleaning the bedroom ceiling fan will help as well.
It's very rare for captive reptiles to get mites. In more than twenty-five years of keeping reptiles, I've only ever had one snake develop mites. Most reptiles that get mites - have been exposed to a wild-caught specimen OR have been kept on a substrate that had mite eggs in it.
about 3 years ago
He is the owners son!
The average lifespan of a Silentnight mattress is about 6 to 8 years. This is just an average though, as numbers can vary from these given. One should expect at least 6 years.