Population by Year. World population from 5000 BC to 2016, with annual growth rate, yearly change, population density, and urban population. All people on 1 page. View the entire current world population on a single page, showing every single person one by one, increasing in real time.
To calculate your cholesterol ratio, divide your high-density lipoprotein (HDL, or good) cholesterol number into your total cholesterol number. An optimal ratio is less than 3.5-to-1. A higher ratio means a higher risk of heart disease.
Do you often wonder what your blood pressure numbers mean? Doctors call them systolic (the top number) and diastolic (the bottom number) blood pressure. Knowing both is important and could save your life. What Does the Systolic Blood Pressure Number Mean? When your heart beats, it squeezes and pushes blood through your arteries to the rest of your body.