Evidence supporting the use of: Calcium
For the health condition: Sleep (restless and disturbed)

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Synopsis

Source of validity: Traditional
Rating (out of 5): 2

Calcium has traditionally been recommended as a remedy for sleep disturbances, including restless and disturbed sleep. This is primarily based on its role in muscle function, nerve transmission, and the regulation of certain neurotransmitters. Folklore and older medical texts often suggest that calcium, sometimes in combination with magnesium, can help ease nighttime restlessness or muscle cramps that interfere with sleep. It is thought that calcium helps the brain use the amino acid tryptophan to manufacture melatonin, a hormone that induces sleep. However, the direct scientific evidence supporting a significant role for calcium supplementation in improving sleep quality is limited and somewhat inconclusive.

Some small observational studies and older research suggest a link between low calcium intake and sleep disruptions, particularly in populations at risk of deficiency (e.g., postmenopausal women, elderly individuals). Nonetheless, controlled trials specifically investigating calcium supplementation for sleep disorders are scarce, and most have not shown a strong or consistent benefit. The most compelling rationale for calcium’s role comes from its contribution to overall health, which may indirectly support better sleep in deficient individuals. In summary, while traditional wisdom favors calcium for sleep, modern research does not robustly validate its use for this specific purpose.

More about calcium
More about Sleep (restless and disturbed)

Products containing calcium

Nature's Sunshine Love and Peas (Sugar Free)
Nature's Sunshine AIVIA Clean Energy
Nature's Sunshine AIVIA Hydrate
Nature's Sunshine AIVIA MCT Powder
Nature's Sunshine AIVIA Plant Protein
Nature's Sunshine AIVIA Plant Protein
Nature's Sunshine AIVIA Whey Protein
Nature's Sunshine AIVIA Whey Protein
Nature's Sunshine Balanced B Complex (Vitamin B)
Nature's Sunshine Bilberry Fruit (Concentrate)
Nature's Sunshine Estro-Assured (Formerly Breast Assured)
Nature's Sunshine Calcium-Magnesium (SynerPro)
Nature's Sunshine Calcium Plus Vitamin D
Nature's Sunshine Chromium-GTF
Nature's Sunshine Coral Calcium
Nature's Sunshine Coral Calcium
Nature's Sunshine Iron (Chelated)
Nature's Sunshine Love and Peas
Nature's Sunshine Magnesium
Nature's Sunshine Mega-Chel
Nature's Sunshine MultiVitamin & Mineral (SynerPro)
Nature's Sunshine MultiVitamin & Mineral (Time Release)
Nature's Sunshine Natural Changes
Nature's Sunshine Nature's Harvest
Nature's Sunshine Power Meal
Nature's Sunshine Power Meal
Nature's Sunshine Sea Calcium (Nature's)
Nature's Sunshine Silver Shield BioGuard Hand & Body Cream
Nature's Sunshine Skeletal Strength
Nature's Sunshine Solstic Twenty-Four
Nature's Sunshine Solstic Revive
Nature's Sunshine Stixated
Nature's Sunshine Stomach Comfort (Chewable)
Nature's Sunshine Structural System (30 Day Program)
Nature's Sunshine Super Supplemental
Nature's Sunshine Super Supplemental (Without Iron)
Nature's Sunshine Super Trio
Nature's Sunshine Vitamin B6
Nature's Sunshine Vitamin C Ascorbates
Nature's Sunshine Chewable Vitamin C
Nature's Sunshine Citrus Bioflavonoids (Vitamin C)
Nature's Sunshine VitaWave
Nature's Sunshine Zinc