Chelsea, our pregnancy fitness expert, is a certified personal trainer at Crunch gym in San Francisco, California. She gave birth to her daughter, Madeira Re, in July 2006. Read more
Many women are told by their doctors or midwives to limit their caffeine consumption while they are pregnant. Giving up that morning cup (or cups) of coffee may be a struggle for some pregnant women, and many question if it is really necessary to give up caffeine completely while they are pregnant.
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The topic is a controversial one and the answer is still under debate. Some studies have shown a slightly higher risk of miscarriage with women who consume more than 300 mg of caffeine a day. Others have shown that babies born to women who consumed more than 500 mg of caffeine a day while pregnant had faster heart and breathing rates, and spent more time awake in the first few days after birth. However, the research is inconclusive and the amounts of caffeine generally used in the studies were vastly greater than what a normal person would consume on a daily basis. The most consistent finding with studies performed on caffeine consumption during pregnancy was a possible association with low birth weights. According to the March of Dimes, high caffeine consumption may slightly increase the risk of preterm labor or low birth weight; and in a fetus who is already experiencing difficulties, this slight increase could make all the difference.
Most experts agree that moderate caffeine consumption is probably safe for a healthy woman experiencing a normal pregnancy. However, decreasing or cutting out caffeine altogether will probably make you feel better because caffeine can cause or exacerbate many common pregnancy-related complaints. Since caffeine is a stimulant, it can cause insomnia, nervousness, and headaches. It can contribute to heartburn because it stimulates the secretion of stomach acid, and it's a diuretic so it will enhance dehydration. It also causes your bones to lose calcium; and contains phenols which impede your body's ability to absorb iron, a nutrient many pregnant women are already lacking.
Coffee and tea are the most obvious culprits for caffeine, but it's also found in chocolate, some soft drinks (including several orange sodas and root beers), energy drinks, and some over-the-counter medications.
Here is a list of common caffeinated foods and beverages and their caffeine content:
Food or Beverage
Quantity
Caffeine Content
Brewed coffee
8 ounces
100-300 mg
Espresso
2 ounces
40-70 mg
Decaffeinated coffee
8 ounces
1-8 mg
Brewed tea
8 ounces
35-175 mg
Green tea
8 ounces
8-30 mg
Instant tea
8 ounces
40-80 mg
Iced tea
12 ounces
65-75 mg
Soft drinks
12-ounce can
30-60 mg
Hot cocoa
8 ounces
3-30 mg
Milk chocolate
1 ounce
1-15 mg
Dark or semisweet chocolate
1 ounce
5-35 mg
If you are a regular coffee, tea or cola drinker and want to kick the habit completely while you are pregnant, ease off gradually. Going cold turkey may cause headaches, fatigue, and lethargy.
All information on ParentingWeekly is for educational purposes only. The place to get medical advice, diagnoses, and treatment is your physician. If you have personal concerns about your health or the health of your baby, we recommend that you consult with your physician at once. ParentingWeekly respects your privacy and promises to keep any information you give to us confidential. Please e-mail any questions regarding our site to: