GLOSSARY

Choline Deficiency is inadequate choline supply for body needs, potentially affecting liver and muscle, with nonspecific symptoms.

Choline deficiency can be associated with fatty liver and muscle injury, but post-exercise soreness is not a specific diagnostic sign. Needs and synthesis vary with circumstances. Excessive supplements can cause body odour, gastrointestinal symptoms or other effects. Membrane and nerve roles do not justify unlimited intake, and correcting deficiency differs from enhancing an already adequately supplied athlete.

Choline is essential but is not usually counted among the thirteen vitamins, sometimes appearing beside vitamin-like compounds. Endogenous synthesis does not cover every circumstance. Its phospholipid, neurotransmitter and methyl-group roles are connected, but another B vitamin cannot simply replace a choline shortfall. Classification should distinguish an essential nutrient from a conventional vitamin label rather than treating the names as interchangeable.

Eggs, meat, fish, soy and some pulses supply choline, allowing different dietary patterns to combine sources. Phosphatidylcholine is one food form, but its total mass is not pure choline mass. Labels need distinction between ingredient amount and choline supplied; lecithin also does not guarantee purity or a fixed choline content simply from its name.