ApoE4 (Apolipoprotein E4)

ApoE4 (Apolipoprotein E4) is a variant of the ApoE gene, which produces a protein involved in lipid metabolism and brain health. It influences the way the body processes fats and cholesterol, especially in the brain. Having the ApoE4 variant increases the risk of developing Alzheimer's disease and may affect how the brain clears away harmful proteins. People with this variant might be more vulnerable to cognitive decline, but it is not a guarantee they will develop the disease. Overall, ApoE4 is an important genetic factor linked to brain health, influencing susceptibility rather than certainty.