Create an account
Substances in food that your body needs to grow, to repair itself, and to supply you with energy.
is a unit of heat used to measure the energy your body uses and the energy it receives from food.
are starches and sugars found in foods, which provide your body's main source of energy.
Dietary Guidelines for Americans
are a set of recommendations about smart eating and physical activity for all Americans
Please allow access to your computer’s microphone to use Voice Recording.
Having trouble? Click here for help.
We can’t access your microphone!
Click the icon above to update your browser permissions and try again
Reload the page to try again!Reload
Press Cmd-0 to reset your zoom
Press Ctrl-0 to reset your zoom
It looks like your browser might be zoomed in or out. Your browser needs to be zoomed to a normal size to record audio.
Please upgrade Flash or install Chrome
to use Voice Recording.
For more help, see our troubleshooting page.
Your microphone is muted
For help fixing this issue, see this FAQ.
Star this term
You can study starred terms together