Have you ever met a set of identical twins? Did you have trouble telling them apart? Twins are similar in ways you cant see too. That makes twins a powerful tool for studying health and disease.
Many health conditions run in families. If your parents or siblings have a disease your chance of having it increases. Thats because you share many genes.
Genes are stretches of DNA that you inherit from your parents. They define features like your risk for getting a disease. But that doesnt mean you`ll get the disease. Many other factors can influence your risk of disease like how much physical activity you get your diet and whether you drink or smoke.
Identical twins make for a natural experiment. They share many things while growing up the same DNA their mother’s womb the same home environment and the same parents. But as they get older and start living separate lives they’re exposed to more unique environments. That lets scientists look at differences between twins health and their lifestyles as they age.
Theres a potential with identical twins who are different in terms of disease to see whether we can find the causes explains Dr. Thomas Mack a twin and chronic disease expert at the University of Southern California. Thats because both twins dont always get a disease even though they share the same DNA.
Identical twins arise when a fertilized egg splits into two identical fertilized eggs. Since the two eggs share the same genes identical twins are always the same sex and have the same physical features.
The other type of twin is called fraternal twins. Fraternal twins come from two separate eggs that happened to be fertilized at the same time by two different sperm. These twins get different mixtures of their parents genes so they look just like normal siblings except that they;re the same age.
Mack is studying twins to understand what puts women at higher risk for breast cancer. It’s not clear why one person gets cancer but another doesn’t. His team is looking at differences between identical twins fraternal twins, and normal siblings.
There are several common risk factors for breast cancer which include the age at which you have your first baby, age of first menstruation, age of menopause and whether or not you’ve been an alcohol drinker Mack explains.
His work found that fraternal twins and normal siblings had similar risk patterns. But the known risk factors couldn’t explain why one identical twin got breast cancer and the other did not. Now his team is looking at what else may be involved.
We want to know what environmental things have any kind of effect between one twin who gets influenced by the infection and the other twin who doesn’t Mack clarifies. His team trusts that contemplating twins will help reveal new risk factors for bosom malignant growth.
Regardless of whether you’re a twin knowing your family’s health history is significant for your health. It can help your health care team give better care to you. Converse with your supplier about how to bring down your risk for sicknesses that run in your family.