A new study published in the Journal of Ethnopharmacology reveals that the seeds of Nigella sativa , commonly known as “black seed,” may provide an ideal nutritional supplement for preventing or slowing the progression of Alzheimer disease. 
Researchers divided forty elderly volunteers into a treatment group receiving 500 mg capsules of Nigella Sativia twice daily for nine weeks and a placebo group. Subjects were assessed for neuropsychological state and safety profile twice before treatment and after nine weeks. The trial resulted in significant improvements in memory, attention and cognition without any measurable changes in any biochemical markers of cardiac, liver, or kidney function during the nine-week study period.
The researchers also noted that beyond its neuroprotective properties Nigella Sativa also has kidney protective, lung protective, cardioprotective and liver protective properties.
It is remarkable that a thousand years ago the Persian scholar Ibn Sīnā described Nigella sativia in his Canon of Medicine for their enlivening and tonifying effects as follows: ‘it stimulates the body’s energy and helps recovery from fatigue and dispiritedness. It appears that science is only now catching up to the wisdom of the ancients, which in the case of Black Seed, was known as ‘The Remedy for Everything But Death .’
Our own review of the scientific literature on the US National Library of Medicine reveals this remarkable seed’s experimentally confirmed benefits articulated through 20 distinct physiological actions:
- Analgesic (Pain-Killing)
- Gluconeogenesis Inhibitor (Anti-Diabetic)
- Hepatoprotective (Liver Protecting)
- Insulin Sensitizing
- Interferon Inducer
- Leukotriene Antagonist
- Renoprotective (Kidney Protecting)
- Tumor Necrosis Factor Alpha Inhibitor
Black seed, like turmeric, ginger, pepper, oregano, and cinnamon, is commonly used as both a food and medicine in traditional cultures. As research continues to accumulate confirming ancient dietary compounds  in preventing and treating disease, a genuine paradigm shift within conventional medicine is imminent. When safe, affordable and easily accessible spices, herbs and food concentrates produce therapeutic effects often superior to the drugs , we are increasingly encouraged to look to the farm before the pharmacy.
Read the full article here: http://www.greenmedinfo.com/blog/could-eating-simple-black-seed-prevent-alzheimers-disease 
  Muhammad Shahdaat Bin Sayeed, Md Asaduzzaman, Helal Morshed, Md Monir Hossain, Mohammad Fahim Kadir, Md Rezowanur Rahman. The effect of Nigella sativa Linn. seed on memory, attention and cognition in healthy human volunteers.  J Ethnopharmacol. 2013 Jul 30 ;148(3):780-6. Epub 2013 May 21. PMID:23707331