Excessive Caffeine

Although you don't have to give up your morning coffee entirely, you might want to think about reducing the number of cups you have each day. For your own health, limit yourself to two glasses per day or less.

According to research published in 2016 by the American Society for Reproductive Medicine, drinking more than five cups of coffee per day is linked to lower fertility, and once you get pregnant, consuming more than 200 mg of caffeine per day (roughly two cups of coffee) may actually increase your risk of miscarriage. Remember that different kinds of coffee have varying amounts of caffeine; a cup of Starbucks coffee often has more than other brands. Additionally, caffeine can be found in tea, hot chocolate, energy drinks, as well as sodas.