Peppermint Studies

• A review of the bioactivity and potential health benefits of peppermint tea (*Mentha piperita* L.)
• Final report on the safety assessment of Mentha Piperita (Peppermint) Oil, Mentha Piperita (Peppermint) Leaf Extract, Mentha Piperita (Peppermint) Leaf, and Mentha Piperita (Peppermint) Leaf Water
• In vitro antiviral, anti-inflammatory, and antioxidant activities of the ethanol extract of Mentha piperita L

Mint and Menthol: A Review of Potential Health Benefits and wider Human effects

Key Physiological Mechanisms Highlighted in the Study

Trigeminal Nerve & TRPM8 Activation:

Menthol and peppermint essential oil act as agonists for TRPM8 (Transient Receptor Potential Melastatin 8) cold-sensing ion channels, which are heavily concentrated along the branches of the trigeminal nerve (\(CN\ V\)).

Perception of Upper Airway Openness:

Rather than physically dilating the anatomical airway tissue, menthol vapor stimulates the mucosal cold receptors of the nasal cavity served by the trigeminal ganglia. This tricks the central nervous system into perceiving a sudden cooling sensation and increased airflow, significantly reducing subjective dyspnea ("air hunger") and creating the sensation of open, clear airways.

Alertness and Cognitive Clarity

Stimulation of the trigeminal network sends ascending neural signals straight to the reticular activating system (RAS) in the brainstem. This sensory input elevates central arousal, resulting in increased subjective alertness, improved reaction time, and reduced mental fatigue

Allergies

• Peppermint may be clinically effective in alleviating the nasal symptoms of allergic rhinitis.

Antioxidant

Antioxidant and enzyme-inhibitory activity of peppermint extracts and essential oils obtained by conventional and emerging extraction techniques.

Cancer

The use of peppermint as a method in complementary medicine may improve nausea, vomiting, and anorexia in patients with breast cancer undergoing chemotherapy.

Anti-tumorigenic activity of five culinary and medicinal herbs grown under greenhouse conditions and their combination effects.

Evaluation of cytotoxicity and anticarcinogenic potential of Mentha leaf extracts

Modulatory effects of Mentha piperita on lung tumor incidence, genotoxicity, and oxidative stress in benzo[a]pyrene-treated Swiss albino mice

Mint prevents shamma-induced carcinogenesis in hamster cheek pouch.

Menthol regulates TRPM8-independent processes in PC-3 prostate cancer cells.

Digestive System

• Peppermint may have therapeutic value in gastric emptying disorders.

Hormones

• Effects of peppermint teas on plasma testosterone, follicle-stimulating hormone, and luteinizing hormone levels and testicular tissue in rats

Infant Care

• Peppermint water is effective in the prevention of nipple pain and damage associated with breastfeeding.
• Peppermint is at least as effective as the drug simethicone in the treatment of infantile colic.

Oral Health

• Effectiveness of Mentha piperita Leaf Extracts against Oral Pathogens: An in vitro Study.

Radiation Protection

• Protection against radiation-induced testicular damage in Swiss albino mice by Mentha piperita (Linn.)
• Radioprotective influence of Mentha piperita (Linn) against gamma irradiation in mice: Antioxidant and radical scavenging activity

Respiratory

Mint and Menthol: A Review of Potential Health Benefits and wider Human effects

Wound Healing

The application of the M. piperita essence for wound healing accelerates the process and improves outcomes.