An aortic dissection is a condition that begins as a tear in the internal layer of the main artery in the body (or aorta). Here, the blood flows through the cut, leading to a split in the inner and middle layers of the aorta.

Asperger’s syndrome, sometimes known as high-functioning autism, is a developmental abnormality characterized by challenges with social interaction and repetitive behavior patterns. It falls under the category of autism spectrum disorder (ASD), which encompasses a range of autism-like conditions.

Soy is a common type of edible legume. Records of its consumption date back over 10,000 years, and it was initially grown and eaten in East Asia. There are numerous variants of soy today, and it is produced mainly in the U.S., China, Brazil, and Argentina.

Avascular necrosis, osteonecrosis, or aseptic necrosis is a severe health issue that sets in when the blood supply to a bone is disrupted temporarily or permanently, leading to the death of osteocytes or bone cells.

Avian influenza, also termed bird flu, is a highly contagious viral infection that primarily affects birds, particularly poultry. However, certain strains of the pathogen can also infect humans and other animals, leading to potential public health concerns.

Chlamydia is one of the most prevalent sexually transmitted diseases worldwide, arising from a bacterium known as chlamydia trachomatis. While it can affect both men and women, the infection rate among women is said to be higher than among men.

Metabolism refers to the bodily chemical reactions that occur while food and liquids are transformed into energy. A sophisticated system combines calories and oxygen to create and release energy. This energy powers the body’s processes.

Bone cancer is a rare condition that only accounts for less than 1% of all cancers. Here, a tumor develops in the bone itself. It can affect any bone but is usually found in the pelvis or the long bones in the arms and legs.