MAR 22, 2019 8:03 PM PDT

How Small Changes in DNA Can Impact Our Health

WRITTEN BY: Carmen Leitch

While the exact number is debated, there are probably around 20,000 genes in the human genome. People generally have the same set of genes. The Y chromosome is carried only by men, but it is one of the smallest chromosomes and only has a few genes.

There can be a great deal of variation within the genes we carry, which is part of what gives rise to the individual physical and biological characteristics that people have. Some of those genetic variants, which are discussed in this video, are related to disease and may predispose us or protect us from certain disorders. Learn more about how researchers are trying to connect genetic variants and disease risk to improve health.

About the Author
BS
Experienced research scientist and technical expert with authorships on over 30 peer-reviewed publications, traveler to over 70 countries, published photographer and internationally-exhibited painter, volunteer trained in disaster-response, CPR and DV counseling.
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