It’s true that once you get pregnant, you’re the one who’s going to be watching your diet as you eat for two, but while trying to conceive, your partner-in-conception needs to do his share of healthful eating as well. That’s because what your man eats can affect his fertility. In fact, there’s research showing that there are specific fertility foods your guy can add to his diet to help increase your odds of conceiving the baby of your dreams. And there are other foods that can actually impair your partner’s fertility.

 JUNK FOOD: Sure, your partner knows this stuff isn’t good for the heart or the waistline, but now he’s got to face the fact that fatty, fried, and sugary foods can impair male fertility as well. One more reason to ditch the doughnuts.

HIGH-MERCURY FISH: Mercury has been linked with infertility in both women and men. The fish that have the highest mercury content are swordfish, king mackerel, tilefish, tuna steak, and shark — so swap these fish for omega-3-rich salmon or zinc-rich shellfish if you’re serving seafood.

CAFFEINATED DRINKS AND ALCOHOL: Research shows that too much coffee (or tea or energy drinks) and too much alcohol can seriously decrease sperm count. An occasional drink is generally considered safe, but studies show that drinking wine, beer, or hard liquor daily can reduce testosterone levels and sperm counts and raise the number of abnormal sperm in your ejaculate. So have your partner limit his caffeine intake to the equivalent of two cups per day, and make sure he keeps his alcohol consumption in check. If he’s resistant to the idea of cutting back on cocktails (or beer), remind him that the two of you can celebrate — he with an alcoholic drink and you with your mocktail — once you get pregnant.