Ketones, or ketone bodies, are acids your body makes when it’s using fat instead of glucose for energy. Your body gets most of its energy from glucose, a sugar that mainly comes from carbohydrates in …

An aldehyde differs from a ketone in that it has a hydrogen atom attached to its carbonyl group, making aldehydes easier to oxidize. Ketones do not have a hydrogen atom bonded to the carbonyl group, …

May 7, 2025 · What Are Ketones? Ketones, also known as “ketone bodies,” are energy molecules created by the liver from the breakdown of fats. Your body makes ketones when you don’t have …

Oct 16, 2025 · Ketone, any of a class of organic compounds characterized by the presence of a carbonyl group in which the carbon atom is covalently bonded to an oxygen atom. The remaining two …

Oct 10, 2025 · Your ketone levels can give you critical information about your body. Find out how to check your ketone levels and determine what the results mean.

When the carbonyl group is attached to an aromatic ring, the compound is referred to as an aromatic ketone. If the carbonyl carbon is directly bonded to a benzene ring, it is called an aryl ketone.

Sep 28, 2025 · Ketones are chemicals made by your liver cells when your body breaks down fat for energy. Urine, blood, and breath tests can determine ketone levels.

May 3, 2022 · In a person without diabetes, insulin, glucagon, and other hormones prevent ketone levels in the blood from getting too high by collecting a steady and stable stream of useable glucose.

Having a certain amount of ketones in your blood, urine or breath means that your body is burning fat for fuel instead of carbs. Ketone levels in your blood need to be between 0.5-3 mg/dL for your body to …

Jun 9, 2025 · A ketone is a compound containing a carbonyl functional group bridging two groups of atoms. The general formula for a ketone is RC (=O)R' where R and R' are alkyl or aryl groups.