What to Avoid While Pregnant to Protect Your Baby’s Health

Pregnancy brings joy and anticipation, but it also requires careful attention to what you consume and what you’re exposed to daily. Understanding which substances, foods, and environmental factors pose risks helps you make informed decisions to protect both your health and your baby’s development. The guidance below is based on recommendations from the CDC, FDA, NIH, and other leading health authorities.

Why Is It Dangerous to Drink Alcohol During Pregnancy?

No amount of alcohol is considered safe during pregnancy. When you drink alcohol, it passes directly to your baby through the umbilical cord, affecting development at every stage.

Prenatal alcohol exposure increases the risk of:

• Miscarriage and stillbirth
• Fetal alcohol spectrum disorders (FASDs), which cause lifelong physical, behavioral, and learning disabilities
• Growth problems and low birth weight
• Brain and central nervous system abnormalities
• Facial abnormalities and organ defects

Even small amounts of alcohol at any point during pregnancy can cause harm. If you drank before realizing you were pregnant, talk with your healthcare provider, but avoid all alcohol moving forward.

What Happens If You Smoke or Vape While Pregnant?

Tobacco and nicotine in any form pose serious risks to your pregnancy and your baby’s health. This includes cigarettes, cigars, e-cigarettes, vaping products, and secondhand smoke exposure.

Smoking and nicotine use during pregnancy are linked to:

• Preterm birth (delivery before 37 weeks)
• Low birth weight, which increases health complications
• Sudden infant death syndrome (SIDS)
• Developmental delays and learning disabilities
• Placental problems like placental abruption
• Increased risk of birth defects, including cleft lip and cleft palate

Even secondhand smoke exposure can harm your baby. If you currently smoke or vape, speak with your healthcare provider about safe cessation programs. Quitting at any point during pregnancy provides immediate benefits.

How Do Illegal Drugs Affect Pregnancy and Baby Development?

Illicit drugs including marijuana, opioids, cocaine, methamphetamines, and other substances cross the placenta and directly affect your developing baby. Despite changing legal status of marijuana in some states, it remains unsafe during pregnancy.

Drug use during pregnancy can cause:

• Preterm labor and delivery
• Birth defects affecting the heart, brain, and other organs
• Neonatal abstinence syndrome (NAS), where babies experience painful withdrawal symptoms after birth
• Developmental disorders and long-term cognitive problems
• Placental abruption and other pregnancy complications
• Low birth weight and growth restrictions

If you’re struggling with substance use, medical professionals can connect you with treatment programs designed specifically for pregnant women. Treatment improves outcomes significantly and providers will not judge you for seeking help.

Which Medications Should You Avoid During Pregnancy?

Not all medications are safe during pregnancy. Some prescription drugs and over-the-counter medications can increase the risk of birth defects or pregnancy complications.

Always consult your healthcare provider before taking any medication, including:

• Pain relievers (some NSAIDs like ibuprofen, especially in the third trimester)
• Certain antibiotics
• Acne medications containing isotretinoin (Accutane)
• Some antidepressants and mood stabilizers
• Blood thinners like warfarin
• Certain seizure medications

Never stop taking prescribed medications without medical guidance, as untreated conditions can also harm pregnancy. Your provider can help you weigh risks and benefits or find safer alternatives. Keep a list of all medications, supplements, and vitamins you take and review it at every prenatal appointment.

Why Should You Avoid Certain Fish During Pregnancy?

Fish provides important nutrients like omega-3 fatty acids and protein that support your baby’s brain development. However, some fish contain high levels of mercury, which accumulates in your baby’s developing nervous system and can cause serious developmental problems.

Avoid these high-mercury fish completely:

• Shark
• Swordfish
• King mackerel
• Tilefish
• Bigeye tuna
• Orange roughy

Instead, choose low-mercury options like salmon, tilapia, sardines, trout, and canned light tuna. Limit fish consumption to 8-12 ounces per week of low-mercury varieties. If you eat fish caught by family or friends, check local advisories about water contamination before consuming.

What Foods Cause Infections That Harm Pregnancy?

Foodborne illnesses that might cause mild symptoms in non-pregnant adults can lead to serious complications during pregnancy, including miscarriage, stillbirth, preterm labor, and severe illness in newborns.

Can You Eat Raw Meat and Seafood While Pregnant?

No. Raw or undercooked meat, poultry, eggs, fish, and shellfish can harbor dangerous bacteria and parasites like Listeria, Toxoplasma, Salmonella, and E. coli. These infections cross the placenta and harm your baby.

Always cook meat to safe internal temperatures:

• Beef, pork, lamb: 145°F (with 3-minute rest time)
• Ground meats: 160°F
• Poultry: 165°F
• Fish: 145°F or until flesh is opaque

Avoid raw fish in sushi, raw oysters, rare steaks, and dishes containing raw or undercooked eggs like homemade Caesar dressing or cookie dough.

Is Unpasteurized Dairy Safe During Pregnancy?

Unpasteurized (raw) milk, cheese, and juices can contain Listeria, which causes listeriosis. This infection is particularly dangerous during pregnancy and can result in miscarriage, stillbirth, or life-threatening infection in newborns.

Only consume pasteurized dairy products and juices. Check labels carefully. Avoid soft cheeses like feta, Brie, Camembert, blue cheese, queso fresco, and queso blanco unless the label clearly states they’re made with pasteurized milk.

Should You Avoid Deli Meat While Pregnant?

Deli meats, hot dogs, and other processed meats can harbor Listeria bacteria even when refrigerated. If you choose to eat these foods, heat them until steaming hot (165°F) immediately before eating. Cold deli sandwiches from restaurants or prepared foods pose particular risk.

Safer alternatives include freshly cooked meats, canned meats that are heated, or vegetarian proteins like beans and legumes.

Do You Need to Wash Fruits and Vegetables During Pregnancy?

Yes, always wash all fruits and vegetables thoroughly under running water before eating, cutting, or cooking them. Unwashed produce can carry Toxoplasma parasites and other harmful bacteria from soil contamination.

This is especially important for produce eaten raw. Use a clean brush for firm produce like melons and cucumbers. Even pre-washed salad greens should be rinsed again at home. Avoid raw sprouts entirely, as bacteria can grow inside the seeds before sprouting.

How Much Caffeine Is Safe During Pregnancy?

Research suggests that high caffeine intake may increase the risk of miscarriage and low birth weight. Health authorities recommend limiting caffeine to less than 200 mg per day during pregnancy.

This equals approximately:

• One 12-ounce cup of coffee
• Two shots of espresso
• Four 8-ounce cups of black tea
• Five 12-ounce cans of cola

Remember that caffeine appears in coffee, tea, soft drinks, energy drinks, chocolate, and some medications. Read labels and track your total daily intake from all sources. Consider switching to decaffeinated options or herbal teas that are pregnancy-safe (ask your provider which herbs are safe).

Are Herbal Supplements and Teas Safe While Pregnant?

Many people assume herbal products are safe because they’re “natural,” but most herbal supplements and teas lack safety testing during pregnancy. Some herbs can trigger uterine contractions, interfere with fetal development, or interact with medications.

Never take herbal supplements, vitamins beyond your prenatal vitamin, or herbal teas without explicit approval from your healthcare provider. This includes supplements marketed for pregnancy like raspberry leaf tea, which should only be used under medical guidance and typically only in late pregnancy.

What Household Chemicals Should You Avoid During Pregnancy?

Daily exposure to certain household chemicals and environmental toxins may increase risks of birth defects, developmental problems, and pregnancy complications. While you cannot eliminate all environmental exposures, you can minimize risk with practical precautions.

Which Cleaning Products Are Unsafe During Pregnancy?

Strong chemical cleaners, particularly those containing ammonia, chlorine bleach in concentrated forms, and oven cleaners, can emit harmful fumes. When possible, use gentler alternatives like vinegar, baking soda, and plant-based cleaners.

If you must use strong cleaners:

• Ensure excellent ventilation by opening windows and using fans
• Wear gloves to prevent skin absorption
• Avoid mixing products, which can create toxic fumes
• Consider asking someone else to handle harsh cleaning tasks

How Can You Reduce Exposure to Lead and Mercury?

Lead exposure during pregnancy affects your baby’s brain development and can cause learning disabilities, behavioral problems, and lower IQ. Mercury similarly accumulates in your baby’s developing nervous system.

Reduce exposure by:

• Avoiding renovation or repair of homes built before 1978 (likely to contain lead paint)
• Letting water run for 30 seconds before using for drinking or cooking if you have older pipes
• Following the fish consumption guidelines mentioned earlier
• Avoiding old thermometers and other products containing mercury
• Using glass or stainless steel food containers instead of plastics when possible

Are Pesticides and Garden Chemicals Dangerous During Pregnancy?

Research links pesticide exposure to increased risk of birth defects, developmental delays, and childhood cancers. Minimize exposure by choosing organic produce when possible (especially for fruits and vegetables on the “Dirty Dozen” list), avoiding application of lawn and garden pesticides yourself, and staying away from recently treated areas.

If pesticide application at home is necessary, leave during and after treatment until the area is completely dry and ventilated.

What Personal Care Products Should You Limit While Pregnant?

Some personal care products contain chemicals called phthalates and parabens that may disrupt hormone function. While research is ongoing, you can reduce exposure by:

• Choosing fragrance-free products when possible
• Selecting products labeled “paraben-free” and “phthalate-free”
• Avoiding artificial fragrances in lotions, perfumes, and cosmetics
• Limiting use of nail polish and polish remover
• Checking ingredient lists and avoiding products with long lists of synthetic chemicals

Can You Get X-Rays While Pregnant?

Ionizing radiation from X-rays, particularly in the first trimester, may increase the risk of birth defects and childhood cancers. However, the amount of radiation from a single diagnostic X-ray is generally very low.

If you need an X-ray for a medical emergency or dental work:

• Always inform the provider that you’re pregnant
• Ask whether the X-ray can be postponed until after pregnancy
• Ensure proper shielding protects your abdomen
• Understand that necessary X-rays (such as for dental infections or broken bones) often pose less risk than untreated conditions

Avoid all unnecessary radiation exposure, but don’t refuse medically essential imaging when your provider determines the benefit outweighs the minimal risk.

Why Should You Avoid Hot Tubs and Saunas While Pregnant?

Prolonged exposure to high temperatures, especially in the first trimester when your baby’s neural tube is forming, may increase the risk of neural tube defects like spina bifida. Your core body temperature should not exceed 101°F for extended periods.

Avoid or limit:

• Hot tubs and Jacuzzis
• Saunas and steam rooms
• Very hot baths
• Intense exercise in hot, humid conditions

Brief exposure to warm (not hot) baths is generally safe. If you exercise, stay hydrated, wear breathable clothing, and stop if you feel overheated. Warning signs include dizziness, nausea, or decreased fetal movement.

Should You Travel to Certain Places During Pregnancy?

Some destinations pose health risks during pregnancy due to infectious diseases that can harm fetal development. The CDC maintains updated travel notices for pregnant women.

What Is the Risk of Zika Virus During Pregnancy?

Zika virus, transmitted by mosquitoes and through sexual contact, causes severe birth defects including microcephaly (abnormally small head and brain) and other brain abnormalities. While Zika outbreaks have decreased, the CDC still recommends avoiding travel to areas with Zika risk.

If you must travel to these areas:

• Use EPA-registered insect repellent
• Wear long sleeves and pants
• Stay in air-conditioned or screened accommodations
• Use condoms or abstain from sex during pregnancy if your partner has traveled to Zika areas

Are There Other Travel-Related Infections to Avoid?

Malaria, transmitted by mosquitoes in tropical regions, can cause severe illness and pregnancy complications. Some antimalarial medications are safe during pregnancy, but prevention is best. Avoid travel to malaria-endemic regions if possible.

Additionally, practice careful food and water safety when traveling:

• Drink only bottled or boiled water
• Avoid ice made from tap water
• Eat only cooked, hot foods
• Peel fruits yourself
• Avoid street food vendors

What Workplace Hazards Should Pregnant Women Avoid?

Certain occupations involve exposure to chemicals, radiation, heavy metals, or physical hazards that pose risks during pregnancy. If your work involves any of the following, discuss accommodations with your employer and healthcare provider:

• Healthcare settings with radiation or infectious disease exposure
• Industrial facilities with chemical exposure
• Jobs requiring heavy lifting or prolonged standing
• Work with animals (risk of toxoplasmosis and other infections)
• Positions involving lead, mercury, or pesticide exposure

Federal and state laws require reasonable pregnancy accommodations in many situations. You have the right to a safe work environment that protects your pregnancy.

Where Can You Find Current Pregnancy Safety Guidelines?

Recommendations for pregnancy safety evolve as new research emerges. Rely on authoritative sources for the most current information:

• CDC (Centers for Disease Control and Prevention): Provides guidelines on infections, vaccines, travel, and environmental exposures during pregnancy
• FDA (Food and Drug Administration): Maintains food safety alerts and medication safety information for pregnant women
• NIH (National Institutes of Health): Offers evidence-based research on pregnancy health and safety
• SAMHSA (Substance Abuse and Mental Health Services Administration): Provides resources for substance use treatment during pregnancy

Always consult your healthcare provider before making changes to medications, diet, or lifestyle during pregnancy. They can help you evaluate individual risk factors and make personalized recommendations based on your health history.

Protecting Your Pregnancy Through Informed Choices

Knowledge about what to avoid during pregnancy empowers you to make safer choices for you and your baby. While the list of potential hazards may seem overwhelming, remember that most women who take reasonable precautions have healthy pregnancies and babies. Focus on the changes that matter most: avoiding alcohol, tobacco, and drugs; eating safely prepared foods; limiting environmental chemical exposure; and maintaining regular prenatal care. Your healthcare provider is your partner in this journey and can help you navigate individual concerns as they arise.

If you’re concerned about potential exposures that occurred before you knew you were pregnant, discuss them honestly with your provider. Many exposures cause no harm, and early intervention can often address potential problems. The steps you take now to protect your pregnancy contribute to your baby’s lifelong health and development.