Most couples know about timing of pregnancy, ovulation, and sperm issues.But when it comes to nutrition and food, most have little clues.

There are many foods you should avoid when you are trying to conceive and while you are pregnant.

Some foods are safe and others are not safe during pregnancy because changes in hormones can cause a woman's immune system to become suppressed.

Pasteurization (named after Louis Pasteur) is a process which slows down microbial growth in food. It does not kill all bacteria, just reducing their number so they are less likely to cause a disease.

Prenatal vitamins and other supplements are advised for women who are trying to conceive, who are pregnant, and who are nursing. The RDA or Recommended Daily Allowance tells you how much vitramions are recommended.

Preventing food-borne illness is always important, but is especially so during pregnancy when the consequences can adversely affect the mother and the unborn child.

Moderate consumption of alcohol, low consumption of meat and meat products,
and high consumption of vegetables, fruits and nuts, olive oil and legumes can lead to longer life.

Regular consumption of fruit juices makes us healthy. Are juices also advisable for pregnant women?

Pregnant women are more susceptible to food poisoning. Canned foods if not closed or jarred properly can become accessible for bacteria, and lead to botulism and other bacterial diseases.

Certain infections which you can get by eating contaminated food during pregnancy can harm the pregnancy and the fetus.

Ciguatera fish poisoning is among the most common reasons for fish poisoning around the world.

Michael Pollan has 7 rules for healthy food.

Vitamin B12 preconception decreases malformations

Healthy food costs the same as unhealthy food, tastes better and is more nutritious

Recommendations what to eat and which food not to eat during pregnancy apply as well to the time trying to conceive. Eat the same before pregnancy as if you were already pregnant.