| Effect | Decrease |
| Trial Design | Double blind |
| Trial Length | 1-6 months |
| Number of Subjects | 39 |
| Sex | Male |
| Age Range | 30-44 |
| Body Types | Obese |
In obese men (measured via central obesity rather than BMI) given 1.5g nigella sative seeds twice daily over the course of three months, supplementation seemed to eradicate most subjective complaints (ache, weakness, laziness, forgetfulness, arthralgia, sleeplessness, low libido, high appetite, etc.) and there was an improvement in body weight and other biomarkers of health, but only the weight changes was statistically significant (this may be related to a reduced appetite, but food intake was not measured).
Testosterone was not necessarily increased, but a decline seen in placebo was nonsignificantly avoided.
