…d and thyroid-support blends when checking existing intake.
Food sources
Iodized salt; dairy; seafood; eggs. Seaweed iodine content varies greatly.
Supplement forms
Potassium iodide and sodium iodide.
What to track and reassess
Tell your cl…
…an applying the general high-frequency replenishment rules.
Food sources
Meat; seafood; lentils; beans; iron-fortified cereals. Vitamin C helps absorption of plant iron.
Supplement forms
Ferrous sulfate, fumarate and bisglycinate are exampl…
…rption and the clinical setting with a qualified clinician.
Food sources
Protein foods such as eggs, fish, poultry, meat, dairy, soy and legumes supply amino acids. The body also makes some amino acids.
Supplement forms
L-isoleucine in BCAA…
…d. Symptoms are not evidence that you need this supplement.
Food sources
Usually encountered as an herbal preparation or concentrated extract, rather than a source of an essential nutrient.
Supplement forms
Lavender may be used as an aroma …
…rption and the clinical setting with a qualified clinician.
Food sources
Protein foods such as eggs, fish, poultry, meat, dairy, soy and legumes supply amino acids. The body also makes some amino acids.
Supplement forms
L-leucine alone or i…
…d. Symptoms are not evidence that you need this supplement.
Food sources
Small amounts occur in foods such as organ meats and vegetables; it is also made in the body.
Supplement forms
Alpha-lipoic acid and R-lipoic acid preparations; check …
…d. Symptoms are not evidence that you need this supplement.
Food sources
Trace amounts occur in water and food. This does not establish a need for a lithium supplement.
Supplement forms
Supplemental lithium salts and prescription lithium me…
A carotenoid found in foods and in the retina.
Also called: Lutein
What it does
A carotenoid found in foods and in the retina.
How supplementation is approached
Lutein is an eye-related carotenoid, not a vitamin with a recognized isolated d…
…s 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 cannot—tell you
There is no established dietary deficiency syndrome for this…
…rption and the clinical setting with a qualified clinician.
Food sources
Protein foods such as eggs, fish, poultry, meat, dairy, soy and legumes supply amino acids. The body also makes some amino acids.
Supplement forms
L-lysine tablets, ca…
…rolyte, sleep and multivitamin products before adding more.
Food sources
Pumpkin seeds; almonds; spinach; beans; whole grains.
Supplement forms
Citrate, chloride, oxide and glycinate are examples. The label reports elemental magnesium.
A qu…
… 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 you
There is no established dietary deficiency syndrome for this specif…
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