Stories about women getting pregnant while on the pill may seem like a scare tactic dreamed up to promote abstinence, but it's unfortunately easier than you think. Oral contraceptives are just like any other medication: What you put in your body can interact with them. Avoiding these popular foods could be the difference between single AF and baby on the way.

Grapefruit

Grapefruitpinterest

There's a rumor that drinking a lot of this citrus fruit's juice can up your chances of pregnancy, but doctors insist otherwise. Instead, grapefruit decreases your body's breakdown of estrogen, increasing the risk of dangerous pill side effects, like breast soreness and blood clots.

Herbal Supplements

<p>"My friends&nbsp;often ask <a href="http://www.redbookmag.com/body/health-fitness/advice/a1779/diet-pills-yl/" target="_blank" data-tracking-id="recirc-text-link">if weight-loss pills really work</a>. The short answer is yes: There are&nbsp;medications that have been approved by the FDA that can suppress your appetite&nbsp;or keep you feeling full, for example. And they'll help, as long as you're also&nbsp;<a href="http://www.redbookmag.com/food-recipes/g3039/healthy-desserts/" target="_blank" data-tracking-id="recirc-text-link">sticking to a healthy diet</a> and staying physically active. But you should never&nbsp;take <i data-redactor-tag="i">anything </i>unless it's&nbsp;prescribed&nbsp;and monitored by your doctor. Many of these medications can cause your&nbsp;heart rate or blood pressure to become elevated, so&nbsp;those need to be measured during regular follow-ups. And of course, only your&nbsp;doctor can know how a pill might worsen a medical condition you already have&nbsp;—&nbsp;so&nbsp;please, don't do this by yourself." —<i data-redactor-tag="i">Amy Rothberg, M.D., Ph.D.&nbsp;</i><span data-redactor-tag="span" data-verified="redactor"></span></p>pinterest

The FDA never weighs in on the safety or effectiveness of the herbs, making it tougher for consumers to understand how they might interact with other medications. Many can weaken your birth control, including St. John's wort, a popular plant people take for mood disorders.

Activated Charcoal

Charcoal black ice cream from Little Damage in Los Angeles, Californiapinterest
@little.damage

Charcoal's made its way into lattes, ice cream, and pizza, but the black stuff is more serious than the trend lets on. It's what hospitals use to pump patients' stomachs because it absorbs nearly everything in your gut — including any medication you're on. Doctors have begun to warn that even the little bit found in popular foods can counteract the pill.

Detox Teas

Drinking teapinterest

We've learned that some of these can act like straight-up laxatives, and guess what happens when you're suffering from near-constant diarrhea? You lose everything in your body, including any pills you've popped. There's not always enough time for your birth control to be properly absorbed, and a number of women blame unplanned pregnancies on the teas. For what it's worth, some companies clearly state the risks on their site.

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