mysql blob datatype for documents

Would it be better to store uploaded pdf, word, or excel documents in a MySql blob field rather than keeping them in a directory? I really want to secure the documents and limit document access to specific users. Curious.... Dave HTC Disclaimer: The information contained in this message may be privileged and confidential and protected from disclosure. If the reader of this message is not the intended recipient, or an employee or agent responsible for delivering this message to the intended recipient, you are hereby notified that any dissemination, distribution or copying of this communication is strictly prohibited. If you have received this communication in error, please notify us immediately by replying to the message and deleting it from your computer. Thank you.