On TLC's "Extreme Sisters," twins Brittany and Briana show what it's like to live with their husbands and raise their children under one roof.

Vanishing twin syndrome refers to a condition that can take place during early or later pregnancy. Vanishing twin syndrome is a type of miscarriage. When more than one embryo appears to be developing ...

Good quality sleep is vital to your health, both physical and mental. And when it comes to choosing a mattress, size can play a huge role in how comfortable you are. If you're looking for slimmer ...

After years of answering question after question about being a twin, I can speak for the masses when I say that twins are a fascinating phenomenon. It's estimated that only 3% of the population is a ...

"I do believe that twins in that situation have a sort of ‘extra sense’ about what is happening with their twin," one expert tells TODAY.com. A video of twin girls selecting the same colored blocks ...

“It’s vanished,” the sonographer said. He had checked the ultrasound several times and was certain of his assessment. My husband and I craned forward to examine the ghostly shadows on the screen, the ...

A parasitic twin is an identical twin that has stopped developing during gestation, but is physically attached to the fully developing twin. The fully developed twin is also known as the dominant or ...

Some mattress sizes are easy to differentiate, like a full versus a queen, but others are downright confusing. For example, what's the difference between a single and a twin mattress? Technically, ...

How far would you go to find your "twin flame?" Individuals may embark on an exhaustive journey in the quest for a twin flame, or a profound romantic connection. Two documentaries, “Escaping Twin ...

Rami Malek and Scarlett Johansson are among the stars who share a birthday — and sometimes the spotlight — with their twin Erin Maxwell is a seasoned journalist with nearly two decades of experience ...

The twin flame is a concept that promotes an intense and powerful soul connection between two individuals. No scientific evidence supports the twin flame ideology, and some traits can draw comparisons ...