Iodine
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What it does
Is needed to make thyroid hormones.
Possible deficiency symptoms
Low intake can contribute to an enlarged thyroid and impaired thyroid hormone production. Symptoms are not specific.
How supplementation is approached
Review io…
Isoleucine
Some search terms matched…e or a laboratory finding is not automatically a standalone deficiency diagnosis. Assess overall protein intake, absorption and the clinical setting with a qualified clinician.
Food sources
Protein foods such as eggs, fish, poultry, meat, d…
Lavender
Some search terms matched…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound.
Lavender may be used as an aroma or in a product specifically formulated for oral use. Do not ingest a fragrance or topical essential oil…
Leucine
Some search terms matched…e or a laboratory finding is not automatically a standalone deficiency diagnosis. Assess overall protein intake, absorption and the clinical setting with a qualified clinician.
Food sources
Protein foods such as eggs, fish, poultry, meat, d…
Lipoic Acid
Some search terms matched…oms can—and cannot—tell you
There is no established dietary deficiency syndrome for this specific botanical or compound. Symptoms are not evidence that you need this supplement.
Food sources
Small amounts occur in foods such as organ meats …
Lutein
Some search terms matched…elated carotenoid, not a vitamin with a recognized isolated deficiency syndrome. Place any proposed product in the context of the eye diagnosis, diet and the complete eye-health formula. The general redox framework does not establish that a…
Lycopene
Some search terms matched…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound.
Lycopene is a carotenoid found in foods such as tomatoes; a concentrated capsule is a separate supplement decision.
What symptoms can—and…
L-Lysine
Some search terms matched…e or a laboratory finding is not automatically a standalone deficiency diagnosis. Assess overall protein intake, absorption and the clinical setting with a qualified clinician.
Food sources
Protein foods such as eggs, fish, poultry, meat, d…
Magnesium
Some search terms matched…tes in energy production.
Also called: Magnesium, magnesium deficiency, muscle cramps
A cofactor across several systems
Dr. Purser’s course places magnesium in energy, muscle, nerve, sleep and insulin-related discussions. It teaches mineral…
Maitake
Some search terms matched…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound.
Maitake mushrooms eaten as food differ from concentrated mushroom extracts and immune-support blends.
What symptoms can—and cannot—tell y…
L-Methionine
Some search terms matched… health or that a low homocysteine result proves methionine deficiency.
How supplementation is approached
Methionine is part of protein nutrition and the methylation cycle, but adding it is not automatically appropriate when homocysteine is…
Milk Thistle
Some search terms matched…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound.
Milk-thistle extracts are often labeled by silymarin content. A product label is not evidence that a liver disorder has been treated.
Wha…
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