I have researched the subject of natural remedies as I wrote my books on the subject. Let me share some evidence-based facts based on this work:
Traditionally, it has been used to treat skin, gastrointestinal, autoimmune, liver, eye, and other disorders. Turmeric provides relief in allergies, gall bladder ailments, edema, tumors, and cataract. Its anti-inflammatory and antibacterial properties are used to treat inflammations and infections.
Pharmacological reviews by Ammon et al. (1991), Jurenka (2009), and others validate curcumin’s anti-inflammatory properties. Curcumin, the active compound in the spice, exhibits anti-spasmodic activity. It was seen to stimulate bile secretion in animals and help treat liver disorders.
Araujo et al. (2001) and Aggarwal et al. (2007 and 2009) have noted curcumin’s anti-cancer, antiviral, antibacterial, anti-fungal, and gastrointestinal actions. It is also helpful in treating liver and other ailments.
Jagetia and Aggarwal at the Department of Experimental Therapeutics, The University of Texas M. D. Anderson Cancer Center, Houston, US, writes, “Interestingly, curcumin at low doses can also enhance antibody responses. This suggests that curcumin’s reported beneficial effects in arthritis, allergy, asthma, atherosclerosis, heart disease, Alzheimer’s disease, diabetes, and cancer might be due in part to its ability to modulate the immune system.
Curcumin is poorly absorbed into the bloodstream. Black pepper substantially enhances the absorption of curcumin. Ayurvedic physicians and nutritionists recommend mixing a pinch of turmeric in milk to be consumed at bedtime.
The biological role of Piper nigrum has been studied, and its action was observed by Ahmed et al. in 2012. They found that Piper nigrum has many properties: anti-apoptotic, antibacterial, anti-colon toxin, anti-depressant, anti-fungal, anti-diarrheal, anti-inflammatory, anti-mutagenic, anti-metastatic activity, antioxidative, anti-pyretic, anti-spasmodic, anti-tumor, anti-thyroid, ciprofloxacin potentiator, cold extremities, hepatoprotective, etc.