Curcumin is not related to cumin which is a spice made from the seeds of a different plant. Turmeric has been used for headaches, migraine and joint pain, as well as for other conditions. Turmeric is LIKELY SAFE when used appropriately by adults. *Stomach upset, nausea, dizziness or diarrhea. Stop turmeric if you have any of these side effects.
However, it is now accepted that not only were the 'story' elements of the narrative 'fiction', but that the 'facts' on which Haley based is story were also not true-i.e. that the whole story was fiction from beginning to end.
Obviously, a memoir should be true. The author should not alter the truth in telling his or her story. In fact, Elie Wiesel checked the text and made minor corrections in his book, Night, before it was published in the US to make it as truthful as possible.