Ginger contains compounds that inhibit inflammation in cell and animal models, with promising signals for arthritis and psoriasis in humans. For nausea and other conditions, the evidence based on the available sources is too thin for a strong recommendation.
Ginger (Zingiber officinale) contains active compounds such as 6-gingerol, 6-shogaol and zingerone. In cell and animal studies, these compounds inhibit well-known pro-inflammatory signalling proteins such as NF-kB, TNF-alfa, IL-6 and IL-1beta. There are also promising signals in people with arthritis and psoriasis. However, the evidence consists largely of review studies and animal experiments; large randomised clinical trials in humans are mostly lacking.
A particular line of research concerns so-called ginger-derived nanoparticles (small particles from edible ginger). In mouse models of intestinal inflammation (colitis), these particles reduced inflammatory substances and improved recovery of the intestinal wall. This sounds impressive, but the research has so far been conducted exclusively in animals. Whether this effect also occurs in humans is still entirely unknown.
For gout and lupus there are also early indications: a warm ginger compress is mentioned as a complementary therapy for gout, and 6-gingerol appears to influence a specific immune process in lupus. In both cases the evidence is weak and the data come from early-stage research with no large clinical trials.
Regarding nausea, for example from chemotherapy or after a caesarean section, ginger is only briefly and incidentally mentioned in the supplied studies as a possible non-pharmacological option. No concrete effect size or comparison with a placebo is reported. On the basis of these sources, it therefore cannot be firmly concluded that ginger demonstrably helps against nausea.
Regarding safety: the supplied studies do not identify any serious side effects of ginger at normal dietary amounts, but they also do not report extensive safety data. Caution is advised when using ginger as a supplement at higher doses, or in combination with blood-thinning medications. If in doubt, consult a doctor or pharmacist.
The claims are based on 7 unique PMIDs, the majority of which concern reviews and (pre)clinical studies in animal or cell models. One PMID (39557196) relates to a study on nausea after caesarean section. No meta-analyses were used as a direct source. The total number of human participants across the relevant studies cannot be derived from the abstracts.