Vacuum devices do not contribute to the growth of the male sexual organ. This is indicated by the results of research scientists from Iran.
Volunteers aged 18-30 years agreed to the experiment. Within six months was required to use a vacuum device to enlarge the penis. Note the size of the penis in the intervention group, in erection does not exceed 10 centimeters.
The scientists noted that during the experiment some volunteers do shifts in a positive direction. However, the statistical analysis and the overall data refute the physical possibility of increasing manhood with the help of a vacuum device. With the same success it is possible to stick genitals anywhere, hoping it would increase in size.
Another study showed that the use of such accessories is associated with a high risk of bruising and numbness of the penis. With all this, many men continue to believe in the miraculous properties of the device.