Research from the University of Mississippi discovered that damiana contains the active ingredients pinocembrin and acacetin, which indirectly work to keep testosterone levels high while inhibiting estrogen in the body. The table below lists testosterone boosters that include the ingredients covered above.
People with deuteranomaly and protanomaly are collectively known as red-green colour blind and they generally have difficulty distinguishing between reds, greens, browns and oranges. They also commonly confuse different types of blue and purple hues. People with reduced blue sensitivity have difficulty identifying differences between blue and yellow, violet and red and blue and green. To these people the world appears as generally red, pink, black, white, grey and turquoise.
Ninety-nine percent of people with color blindness have difficulty distinguishing between red and green. The absence of one pigment will cause red-green colorblindness. The absence of two pigments will make it difficult to distinguish between blue and yellow as well as green and red. Achromatopsia, the rarest kind of colorblindness, involves the absence of all three pigments. People suffering from this form of color blindness can only see in black, white and gray.