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Ginger is a spice that has traditionally been treated as medicine in both Traditional Chinese Medicine and Ayurveda, doses of 1-3g can reduce nausea and ease digestion quite effectively; superloading the powdered rhizome (vertical root) at 10-15g daily might increase testosterone.

Our evidence-based analysis on ginger features 78 unique references to scientific papers.

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How to Take

Recommended dosage, active amounts, other details

Typically, dosages of 1-3g are used as a preventative treatment for nausea. This applies to morning sickness in pregnancy, motion sickness, and sometimes chemotherapy or operation-induced nausea.

For other usages of ginger, 1g is typically used. This seems to be effective for increasing intestinal motility, but was insufficient in reducing blood glucose in the one study attempting it.

For testosterone boosting, a supplement is probably advised. The dosage used in rats, after conversion to humans based on Body Surface Area, equates to about 14g from natural sources (usually less of an extract percentage than is possible with supplements).

Ginger can be ingested via several ways, and the following is an approximate standardization table for 1g of Ginger Extract:[3]

  • A capsule that has 1g ginger extract in it

  • A teaspoon of fresh, grated, rhizome (the vertical aspect of ginger root)

  • 2 droppers (2mL) of liquid extract

  • 2 teaspoons (10mL) of syrup

  • 4 cups (8 oz each) ginger tea, steeping 1/2 teaspoon grated ginger for 5–10 min

  • 8-oz cup ginger ale, made with real ginger

  • 2 pieces crystallized ginger, each 1 inch square, 1/4 inch thick

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Human Effect Matrix

Unlocked for Examine members

The Human Effect Matrix summarizes human studies to tell you what effects Ginger has on your body, how much evidence there is, and how strong these effects are.

Full details are available to Examine members.
Grade Level of Evidence
Robust research conducted with repeated double-blind clinical trials
Multiple studies where at least two are double-blind and placebo controlled
Single double-blind study or multiple cohort studies
Uncontrolled or observational studies only
Level of Evidence
? The amount of high quality evidence. The more evidence, the more we can trust the results.
Outcome Magnitude of effect
? The direction and size of the supplement's impact on each outcome. Some supplements can have an increasing effect, others have a decreasing effect, and others have no effect.
Consistency of research results
? Scientific research does not always agree. HIGH or VERY HIGH means that most of the scientific research agrees.
grade-a Notable Very High See all 11 studies
There appears to be a reliable and fairly notable decrease in nausea symptoms with 1-3g of ginger related to pregnancy and seasickness (not as much consensus for post-operative nausea)
grade-b Minor Very High See all 4 studies
Inflammatory parameters seem to be reduced following ginger consumption
grade-b Minor High See all 4 studies
Ginger appears to increase the rate of gastric digestion, although the potency thereof is not too reliable
grade-b Minor High See all 3 studies
There may be a small reducing effect, but it does not appear to be greater than the active control of Ibuprofen
grade-c Minor - See study
May reduce colon cancer risk as assessed by a beneficial influence in eicosanoids in the colon; requires more evidence
grade-c Minor - See study
Ginger was capable of reducing menstrual pain at 1g daily
grade-c Minor - See study
May increase HDL-C levels
grade-c Minor - See study
May decrease LDL-C
grade-c Minor - See study
A decrease in LES pressure (not necessarily a good thing, especially for acid reflux) has been noted with ginger ingestion
grade-c Minor - See study
An increase in memory has been noted in older women, no current studies in youth
grade-c Minor Moderate See 2 studies
A possible reduction of delayed onset muscle soreness, but this topic is a bit contested
grade-c Minor - See study
A decrease in reaction time has been noted to be secondary to improvements in cognition in older women; no studies in youth at this moment in time.
grade-c Minor - See study
Possible cholesterol reducing effects associated with ginger consumption
grade-c Minor - See study
May decrease triglycerides
grade-c Minor - See study
May reduce symptoms of vertigo related to the anti-nausea effects, but this research is highly preliminary
grade-c - - See study
Despite the reduction in nausea associated with ginger consumption, it does not appear to be associated with reduced symptoms of motion sickness
grade-c - - See study
No significant influence on pathological involuntary eye movements
grade-c - - See study
No significant influence on the rate of perceived exertion
grade-d Notable - See study
In the semen of infertile men, the reduction in lipid peroxidation has reached 53.7% with supplementation of ginger over three months.
grade-d Notable - See study
Although the study is limited by lack of placebo control and disclosure of dosage, ginger is associated with a 43.2% increase in serum luteinizing hormone over three months in infertile men.
grade-d Notable - See study
One study found a notable improvement in mood, physical, and behavioral symptoms with 500 mg of ginger daily. This study needs replication.
grade-d Notable - See study
Preliminary evidence suggests a 47.3% increase in seminal motility seen with three months supplementation of ginger to infertile men.
grade-d Minor - See study
An increase in seminal glutathione has been noted to reach 26.7% in otherwise infertile men.
grade-d Minor - See study
A decrease in appetite has been noted with ginger intake
grade-d Minor - See study
In infertile men, an undisclosed amount of ginger for three months is able to increase ejaculate volume by an average of 36.1%
grade-d Minor - See study
A 17.6% increase in follicle stimulating hormone has been noted in infertile men given ginger, which is thought to underlie the observed pro-seminal effects of supplementation.
grade-d Minor - See study
A somewhat minor increase in sperm count (16.2%) is seem with supplementation of ginger (amount undisclosed) to infertile men over three months.
grade-d Minor - See study
Seminal viability (40.7%) and normal morphology () is increased in infertile men given ginger.
grade-d Minor - See study
An increase in testosterone has been noted to reach 17.7% in infertile men given an undisclosed amount of ginger over three months.
grade-d Minor - See study
Ginger has been found to increase the thermic effect of coingested food products
grade-d - - See study
No significant alterations in blood glucose seen with ginger ingestion
grade-d - - See study
No significant alterations in insulin levels (fasting) seen with ginger
grade-d - - See study
Despite an increase in the thermic effect of food, overall metabolic rate does not appear affected

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Things to Note

Other Functions:

Primary Function:

Also Known As

Zingiber officinale Roscoe, Zingiberaceae

Do Not Confuse With

Curcumin (other bioactive of the Zingiberaceae family)

Goes Well With

  • Magnolia officinalis (Ginger is able to enhance the anti-depressant effects of magnolia officinalis)

  • The scent of ginger may confer some pain relief effects. One study conducted comparing massage against massage + ginger scent noted significant differences 1 week after the trial started, but the differences evened out after 4 weeks.[1]

  • It has been scientifically established, through ginger, that chewing your food is a good idea[2]

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Click here to see all 78 references.