Tag: Hydrocarbon chains

A single gram of fat contains about 9 calories, more than double the energy density of a gram of carbohydrates or protein, which contain about 4 calories each. This significant difference explains why lipids have high energy content and serve as the body's primary long-term energy reserve.

Vitamins are fundamentally either fat-soluble (nonpolar) or water-soluble (polar), a classification that critically affects their absorption and storage in the body. This ability to determine if a vitamin is polar or nonpolar can demystify how these vital nutrients function within your physiology, and it begins with a look at molecular composition.