Ticking Male’s Biological Clock
More evidence were found that men as well as women have ticking biological clocks that start to tick in mid-30s. A study done on 12,200 couples proved that the chance of a successful pregnancy falls when the man is over 35, and it is significantly lower if he is over 40. The researchers told in a health conference that it was due to the DNA damage in sperm.
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Genome Changes With Age
Human genomes can change throughout a person’s lifespan. It’s influenced by environmental or nutritional factors. This change may explain the reasons for different deadly illnesses such as cancer which comes with age. Researchers at Johns Hopkins University found epigenetic marks on a DNA sequence which modify over the course of one’s life. The extent of such changes is similar among family members. The changes in the genomic structure can occur as a result of dietary and other environmental exposure. Epigenetics may play a role in diseases like diabetes, autism and cancer.
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Native american DNA links to 6 founding mothers
A new study revealed that 95 percent of native people throughout the Americas can trace part of their ancestry to just six women. The “founding mothers” are believed to have lived between 18,000 and 21,000 years ago.
Tattoos help vaccines penetrate skin
According to a new study, tattooing is a better way of delivering a new generation of experimental DNA vaccines than standard injections. DNA vaccines to stimulate an immune response is challenging from flu to cancer. Tattooing may change this response. Although no approved DNA vaccines on the market, drug companies are conducting clinical trials to investigate this precious technology.
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