Some nutrients may also act to protect the genome from damage. DNA is continually replicating itself, and tens of thousands of errors are made daily because of this.
One well-established gene variant, as an instance, happens on the angiotensin receptor immune body, known as ANG. 1 variation in ANG increases an individual's risk for high blood pressure. This gene variant occurs most commonly in African Americans. Individuals with this gene variant can control high blood pressure with a low-salt diet.
About 73 percent of African Americans are salt sensitive and will be aided by this type of diet. Lots of people of European ancestry have identical variation in precisely the identical gene.
Those folks, also, will be assisted by a low-salt diet. But the identical diet won't help people with high blood pressure due to some other cause. Some people, for example, need a diet rich in calcium to reduce blood pressure. If a doctor knows an individual gets the ANG variant, they can better handle high blood pressure.
If the errors weren't fixed, the genome eventually would be irreparably damaged, and we would develop diseases or perish. Genes, nutrients, and lifestyle (smoking, exercise, environmental pollutants) define how well repair happens and how much suffering occurs. Nutrigenomic experts suspect that cell loss that's not effectively fixed is the cause of several illnesses, such as cancer.
By way of instance, at a 2007 experiment, particular mice with genes that predisposed them to skin cancer have been exposed to UVB radiation, as the radiation from sunlight. Half the mice were given a part of B vitamins known as inositol in their drinking water.