The first thing you need to know is that many doctors strongly recommend some kind of mattress pad for your bed – especially if your existing mattress is firm or extra firm. The reason is simple. Your spine isn’t straight. There are curves involved and you need a way to distribute weight so that these curves are supported.
A foam mattress is great for that reason. It’s something that a memory foam mattress does that other mattress types simply cannot do or duplicate. The closest thing most people can do is buy a medium-firm matress and use thick padding.
Part 2 of 5 Should You Switch to a Foam Mattress? The Pros and Cons