1 The cost of a ventless gas fireplace is $500 to $2,500, and while there are additional installation costs, you may pay extra for finish work (such as a mantle, marble surround, etc.).2  Some top-of-the-line gas fireplaces may cost as much as $5,000 to $10,000 or more. 3  A gas log kit might cost $750 to $1,000 installed. Top vented gas fireplace inserts cost $750 to $3,000, and installation adds another $500 to $1,000. 2  Direct-vent gas fireplaces cost $1,000 to $3,500, plus $500 to $1,000 for installation.
Sperm can be affected by lifestyle factors such as smoking, drinking alcohol and taking drugs. There are other lifestyle factors that you may not be aware of, and they're also explained here. The good news is, once you become aware of them, they are fairly easy to avoid. It may be.
The study was the largest of its kind, examining how habits such as smoking and drinking alcohol affected menâs sperm size and shape â also known as sperm morphology. According to the researchers, marijuana use was the only habit they studied to be strongly associated with abnormal sperm morphology.