Alcohol can trigger either a migraine or a cluster headache. There are 3 main triggers in alcohol: Dark alcoholic beverages, such as red wine, sherry, brandy, scotch, bourbon, and beer, contain tyramine. Tyramine is an amino acid that occurs naturally in your body and is also found in many foods.
Sometimes a twin pregnancy just happens. In other cases, specific factors are at play. For example, a twin pregnancy is more likely as you get older because hormonal changes can cause more than one egg to be released at a time. Use of assisted reproductive technologies â such as in vitro fertilization â also boosts the odds of twins or other multiples.
Levels of progesterone will be naturally higher during pregnancies that involve multiples (twins, triplets, etc.) than those in which there is only one fetus. Taking estrogen and progesterone supplements can affect results. Men will also have small amounts of progesterone in their blood.