I'm sure you already know many good reasons to kick your smoking habit. If you weren't convinced yet, now you have one more reason: Quitting smoking may increase your fertility.
Studies on smoking and semen quality found that smoking affects many aspects of sperm health, including decreased sperm counts, decreased sperm motility (the swimming ability of the sperm), and sperm shape.
If you're going through fertility treatments, it doesn't mean you're off the hook and can keep on smoking. Researchers have also found that smoking had a strong effect on treatment success when using IVF with ICSI fertility treatments.