heart disease
You get heart disease when your heart isn't able to pump blood as well as it should. This can happen for a variety of reasons.

stroke
You have a stroke when the blood supply to a part of your brain is cut off. This damages your brain and can cause symptoms like weakness or numbness on one side of your body. You may also find it hard to speak if you've had a stroke.

blood pressure
Blood pressure is the amount of force exerted by the blood on the walls of the vessels that carry it. You can think of it like the water pressure in your home: the more pressure you have, the faster and more forcefully the water flows out of the shower. Blood pressure is measured in millimeters of mercury (written as mm Hg). When your blood pressure is taken, the measurement is given as two numbers, for example 120/80 mm Hg. The first, higher, number is called the systolic pressure, and the second, lower, number is the diastolic pressure. The systolic number is the highest pressure that occurs while the heart is pushing blood into the arteries. The diastolic number is the lowest pressure that happens when the heart is relaxing and is not pushing the blood.

cholesterol
Cholesterol is made by your liver or absorbed from food. It is used by your body to make bile acids (which help your intestines absorb nutrients) and steroid hormones (like testosterone or estrogen). Cholesterol is also an important part of cell membranes, which are the structures that surround cells. "Good cholesterol" is called HDL; "bad cholesterol" is LDL.

hormones
Hormones are chemicals that are made in certain parts of the body. They travel through the bloodstream and have an effect on other parts of the body. For example, the female sex hormone estrogen is made in a woman's ovaries. Estrogen has many different effects on a woman's body. It makes the breasts grow at puberty and helps control periods. It is also needed to get pregnant.