Late caffeine consumption keeps our brain awake even while we sleep A wake-up call even while we sleep: If we drink coffee late in the evening, it has consequences for our brain. A study shows that caffeine alters our sleep and keeps our brain more alert at night. This hinders the recovery of our brain and could also disrupt nighttime memory formation. Researchers found that this stimulating coffee effect is more pronounced in younger people than in older people. Caffeine aff

Reprogrammed Spleen Produces Insulin in Mice and Monkeys Reprogrammed: There is a natural bioreactor in which vital cells can be grown and regenerated directly in the body – the spleen. As a new study demonstrates, the spleen of mice and monkeys can be modified so that it can, for example, replace the insulin-producing cells of the pancreas – essentially acting as a replacement organ within the body. If this becomes possible in humans in the future, it could revolutionize the

First steps in metastasis formation clarified Quick-change artists: When melanoma cancer cells are attacked by the immune system, they activate specific genes and change their cell type. This reaction then inhibits T cells, among other things, making it easier for the skin cancer cells to colonize lymph nodes and form metastases, as researchers report in "Nature Cancer." They also identified proteins characteristic of these metastasis founder cells that may be suitable target