Nigella sativa is known as black seed. Islamic tradition suggests it is a universal cure.

For example, Bukhaari recorded in the Ninth Century that Muhammad is said to have claimed :

“This black seed is a cure for every disease except death.”

A recent review in an allegedly peer-reviewed journal suggests this idea is still around:

The researchers conducted laboratory experiments using intact animals and clinical trials using human volunteers to substantiate the validity of the statement. However, it is amazing that the researchers after carrying out hundreds of researches around the globe finally concluded that the Prophet‟s statement is one hundred per cent true.

Does the research show this?

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    No evidence that anyone in 2016 believes that? Man... I live in Indonesia among many muslims. Many DOES believe that. It may be obviously true to you. It's actually not obvious to me because recently someone mailed me something saying that garlic plus honey cures cancer. People do believe stuffs like that and I believe that it at least deserve verification.
    – user4951
    Jun 5, 2016 at 17:28
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    @Oddthinking, I live in middle east (namely, Egypt) and I find that many people believe that. In fact, some months ago, there was a seminar in my university that defend this claim!! and a huge controversy was made due to this event. Of course, not all muslims believe in that but many of them do. There are people who still believe in magic and the power of ghosts (there are many many people who can not even read!) hence it's not strange that they believe in such things. Jun 6, 2016 at 1:04
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    @Oddthinking, Here is a link containing a summary of the event that was held: facebook.com/… .. Of course, it's written in arabic but If you just check it you will find the title of the seminar which is " Nigella sativa from bench to clinic ". If you read that arabic content of the status you will find that its aim is to establish the validity of the claim. Jun 6, 2016 at 1:19
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    For example,I quote "دور الابحاث العلميه فى الوصول الى الحقائق التى تثبت ما اشاراليه رسول الله صلى الله عليه وسلم فى حديثه عن الحبه السوداء "في الحبة السوداء شفاء من كل داء" واسعد الحاضرين بادائه وابحاثه التى قام بهاوالتي شملت التأثيرات المضادة للسرطان علي المستوي الخلوي والجيني ." which means that they try to get the scientific facts that prove that what Muhammad said is true regarding black seed. And that the audience was pleased by the research that showed its effects on Cancer on the genetic and cellular level! You can translate the post using any translation site to make sure of my words Jun 6, 2016 at 1:22
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    Let's focus back on the question. It is not "Did Muhammad al-Bukhari say this?" It is not "Did Muhammad say this?" (Lived over a millenia earlier!) It is not about garlic/honey/ghosts/apostasy. It is not about my friends. It is not whether it cures cancer in particular, or whether there is any research at all to suggest it has health effects. It is whether it literally cures every single disease. Let's find someone who is alive in 2016 who is saying that.
    – Oddthinking
    Jun 6, 2016 at 2:08