You need to buy a blood pressure monitor, but you don't know which one to choose. Here's a guide to the various types, to help you find the right one for your everyday situation: the pros and cons of each one, how accurate and easy to read they are, and whether they're safe.

When your doctor prescribes 24-hour ambulatory blood pressure or Holter monitoring, you'll spend a day wearing a recorder the size of a cigarette packet attached to a cuff and worn on your left or right arm. This system monitors your blood pressure day and night for 24 hours.

Deaths due to heart attack are declining. But not among young people, who are consuming growing amounts of cocaine. The white powder is the most vasoconstrictive of all drugs, and some scientists say it can permanently change the anatomy of the brain.

Hypertension is a phenomenon that affects between 6% and 8% of pregnant women, and is the leading cause of maternal and fetal mortality. Often, the main complication is the need to induce the baby very early to prevent later problems.

Cholesterol is essential for our bodies, but if there is too much in the blood and the liver cannot break it down, it causes atherosclerosis and cardiovascular diseases which, in its most extreme forms, can provoke heart attacks and strokes. All in all, cholesterol is one of the most controversial substances circulating in our bodies