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 …

Dec 23, 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 …

What are ketones and how do they work? A clear explanation of their role in energy, brain fuel, and metabolic flexibility.

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 · When it does this, it produces ketones, also known as ketone bodies. If you have high ketone levels, you’re at risk of developing diabetic ketoacidosis (DKA), which can be life threatening.

May 26, 2022 · As the body enters a state of ketosis, it will increase its ketone levels in the urine and blood. Although low levels of ketones in the body are expected and can be healthy, having high …

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.

The fats travel through the blood circulation to reach the liver where they are processed into ketone units. The ketone units then circulate back into the bloodstream and are picked up by the muscle and …