What to watch with Transferrin and Langlebigkeit?

Transferrin is a key iron-transport protein in the blood. For longevity, the ratio of transferrin to ferritin and transferrin saturation are most relevant. Chronically high or low iron levels can promote oxidative stress and are associated with cardiovascular and neurodegenerative risks. Genetics (e.g., HFE variants) influence iron regulation, but effects are moderate and context-dependent. Single SNPs from consumer DNA tests generally have low predictive power. Regular blood measurements (serum transferrin, ferritin, saturation) and a balanced diet are more important. Elevated values may indicate hemochromatosis requiring medical management; low values may signal iron deficiency. Both extremes can impact lifespan, but evidence is mostly observational. Be cautious of exaggerated supplement claims based solely on genetic tests.