Things You Should NOT Do During Pregnancy

• You Should Not Smoke or be Around People Who Do
  Smoking is such a well-known hazard to the mother that it only follows that it is also harmful to the baby. Yet hundreds of thousands of pregnant women still smoke. Secondhand smoke from smokers who live or work with a pregnant women can also affect the fetus. Exposure to smoke can result in spontaneous abortion, pre-term births, low-weight full-term babies, and fetal and infant deaths. See this article, this article, this article, along with thousands of others on the web, for more information.
• You Should Not Drink Alcohol
  Alcohol has a variety of negative effects on your developing baby depending on the dose and frequency. Fetal Alcohol Syndrome (FAS) is the worst-case scenario, leading to severe retardation and other abnormalities. A quote from this article describes the dangers: "FAS is linked to birth defects and is the leading known cause of preventable mental retardation. It is characterized by a number of congenital birth defects which include prenatal and postnatal growth deficiency, facial malformations, central nervous system dysfunction, and varying degrees of major organ system malfunctions. " Also see this article.
• You Should Not Take Illegal Drugs
  A quote from this article states: "In utero drug exposure is associated with an increased rate among newborns of low birth weight, central nervous system damage that may delay or impair neurobehavioral development, mild to severe withdrawal effects, and physical malformations such as cleft palate, heart murmurs, eye defects, and abnormalities of facial features and other organ systems." See also this article.
• You Should Not Take Presecription Drugs or Over the Counter (OTC) drugs, Including Aspirin, Unless Told to Do So by Your Doctor
  Drugs that are safe to take when not pregnant can cause devasting effects to a fetus when you are pregnant. If you are even thinking of becoming pregnant, you should discuss the use of any drugs you currently take with your doctor beforehand. See this page for general information on OTC drugs in pregnancy including a list of safe OTC drugs to take. They recommend not taking any OTC drugs during the first 8 weeks of pregnancy when the heart, lung, and brain is being formed. See this article about effects of Accutane, see this article about the diet drug fen-phen, see this articleabout taking drugs during breastfeeding.
• You Should Avoid Hot Dogs
  Hot dogs have been implicated in several studies. (Note: It has also been found that children under the age of five who eat more than 1 hot dog a week may have an increased risk of cancer). See this article and this note.
• You Should Avoid Caffeine
  Caffeine taken during pregnancy is thought to increase the probability of a child contracting diabetes. See also this article about coffee and tea.
• You Should Avoid Contact with Reptiles
  Be sure to tell your doctor if you have any contact with lizards, iguanas, turtles, or snakes as the salmonella virus is transfered through their feces and can affect your pregnancy. Also, children under the age of 5 are also at risk for contracting salmonella if they are in contact with reptiles.
• You Should Avoid Tick Bites
  Tick bites open you to the risk of lyme disease, which can be deadly to your developing baby. A great book to check on this topic is, "Everything You Need to Know About Lyme Disease and Other Tick-Borne Disorders", written by Karen Vanderhoof-Forschner, a woman who developed Lyme disease while pregnant.
• You Should Avoid Fish
  This warning comes from the November 27 issue of Time Magazine (page 31). Fish concentrate methylmercury, which is known to affect the developing child's brain.
• You Should Not Eat Junk Food
  The basic problem with junk food is that it fills you up but does not provide vitamins or protein. As your stomach size decreases during pregnancy, junk food takes up room and prevents you from eating the foods you really need for your and your baby's health.
• You Should Avoid Vitamin A Supplements
  By consuming as little as 4 times the RDA of vitamin A, you greatly increase the risk of having a baby with birth defects or other problems. Exposure during the first trimester is the worst. Natural sources of vitamin A are OK - it is foods that are artifically supplemented that cause the problem, and most foods are. You need to start reading packages to make sure you are not getting too much Vitamin A. Other fat-soluable vitamins such as D,E, and K can also accumulate in the body organs and tissues and high-dosage supplementation should be discussed with your doctor. See this article, this article, this article, this article, and this article.
• You Should Avoid X-Rays
  According to the book What to Expect When You're Expecting, the risks posed by X-Ray exposure are fairly small, with the greatest risk occuring early in the pregnancy. Informing your doctor or dentist of the fact that you are pregnant is probably the best way to control your risk. If an X-Ray can be postponed until after the pregnancy, then that would eliminate the risk.
• You Should Avoid VDTs
  In this article is the following quote: "Kaiser's researchers tracked 1,583 pregnancies ... [and] were surprised to find a statistically significant 73% increase in miscarriages in working women using CRT-style VDTs (cathode ray tube style video display terminals), compared to other working women." Older VDTs are especially suspect. However, later studies have been less conclusive or contradictory. See also this article and this article.
• You Should Avoid Microwaves
  An excerpt from this page, states, "Particularly vulnerable to excessive microwave radiation is the developing fetus." For more information also seethis article.
• You Should not Use an Electric Blanket
  Electric Blankets give off low-level electromagnetic fields which may be harmful to a developing baby. See this article, this article and this article.
• You Should Not Use a Water Bed
  The heaters used in water beds give off the same electric fields as those found in electric blankets (see previous) and should therefore be avoided for the same reasons.
• You Should Avoid Drinking Tap Water if Possible
  Recent studies have shown that drinking tap water during the early months of pregnancy can increase your risk of miscarriage. If this concerns you or you have a history of miscarriage, you may want to discuss drinking bottled water with your doctor. This article discusses research that showed California tapwater was linked to miscarriages. Also see this article. This article discusses why tap water may cause problems for all people (does not directly discuss miscarriage).
• You Should Avoid Stress
  Stress at work is defined as, "high psychological demands from work activities, and low decision-making powers on the job". See this article and this article for more information. This article is also interesting.

• You Should Not Expose Yourself to Pesticides
  Pesticides (including insecticides, herbicides, fungicides and so on) can have a variety of effects on your unborn baby depending on the type of chemical, the length and intensity of exposure and the age of the fetus. In general it is best to avoid exposure to all pesticides. The problem is that pesticide use is extremely widespread in the U.S. You can be exposed to pesticides in your home (ant and roach bait traps, no-pest strips, houshold pest control products and services, flea collars on dogs and cats...), in your yard (lawn care services, do-it-yourself herbicides and insecticides on the lawn or garden), in your neighborhood (especially in rural areas, but also from suburban neighbors spraying their yards), from various food sources... The most you can do is attempt to avoid these dangers as best you can. See this site, this page and this page.
• You Should Avoid Fumes from Paint, Paint Thinner, Household Cleaning Products and so on
  This article and this article discuss the large numbers of toxic products and by-products found in the home and yard. As with pesticides (see previous) the best you can hope for is educating yourself and trying to limit your exposure.
• You Should Avoid Raising Your Body Temperature
  There is a potential danger to the developing fetus if your body temperature rises above 102 degrees. You can raise your body temperature to this level by getting a fever, by exercising too strenuously, working outside on hot summer days, and so on.
• You Should Not Use a Sauna, Hot Tub or Take Long Hot Baths
  Hot tubs and hot baths have a tendency to raise your body temperature and therefore are to be avoided. See the previous item for details.
• You Should Avoid Cleaning Cat Litter Boxes. You Should Avoid Uncooked Meat.
  Both cat litter and undercooked meat present the risk of toxoplasmosis, which causes birth defects. See this article and this article for details.
• You Should Avoid Herpes
  Herpes when transfered to the baby during delivery, can lead to severe complications. The easiest way to avoid this possibility is to avoid contracting herpes. If you do have herpes, you should be sure to tell your doctor. See this article for more information.