Vitamin E has more than one form. The natural ones are found in fats and oils. Synthetic versions also exist. The vitamin E compound that is most useful in the body is called alpha-tocopherol. This is also the most common form of vitamin E. It can occur naturally or be synthetic.

Iron helps the blood cells carry oxygen. When you don't get enough iron, you may feel tired and lack energy. Anemia ("tired" blood) is a health problem that can occur when the body's iron levels are very low. Our bodies don't make iron, so we must get it from foods or supplements.

Neck dissection is a type of surgery. It helps treat cancers of the head and neck.

When an organ like the brain doesn’t get enough oxygen, the condition is called hypoxia. A complete lack of oxygen to an organ is referred to as anoxia. Learn about their causes, symptoms, and treatment.

If conversations about mental health are new to you, it can be hard to know what you need help with. Read about some resources and things you can do to get help.

COVID-19 is caused by a coronavirus called SARS-CoV-2 that spreads easily from person to person. COVID-19 vaccine can prevent COVID-19 disease. Vaccination can help reduce the severity of COVID-19 disease if you get sick.

Vaccines can prevent disease. Childhood vaccination is essential because it helps provide immunity before children are exposed to potentially life-threatening diseases.