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.
Your blood pressure numbers and what they mean. Your blood pressure is recorded as two numbers: Systolic blood pressure (the upper number) â indicates how much pressure your blood is exerting against your artery walls when the heart beats. Diastolic blood pressure (the lower number) â indicates how much pressure your blood is exerting against your artery walls while the heart is resting between beats.