In a recent study conducted by researchers at Fudan University in Shanghai, it was discovered that lower levels of testosterone, combined with higher levels of a protein called neurofilament light chain, significantly increase the risk of cognitive decline in older men. The paper was published in the journal Alzheimer’s & Dementia. As people age, their cognitive abilities generally deteriorate. This deterioration can be subtle at first but may become quite pronounced in advanced age. However, cognitive decline does not affect everyone equally. Some individuals maintain good cognitive functioni…