Age Related Macular Degeneration (AMD) is genetic. A person is more likely to develop AMD if someone in his or her immediate family has had it, but other factors also increase one's risk. The number risk factor for AMD is age. One-third of adults over 75 are affected by AMD.
Other factors that can increase your risk of AMD are;
1) Smoking. Smoking increases a person’s chances of developing AMD by two to five times.
2) Gender. Females are more likely to develop AMD than males
3) Race: Caucasians are more likely to develop AMD than other races. This may be related to differences in genetic background or pigmentation.
4) Obesity: A person with a BMI (body mass index, a measure of body fat) of greater than 30 is 2.5 times more likely to develop the disease than a person with a lower BMI.