Estradiol exhibits neuroprotective effects in various neurological conditions, including stroke, Alzheimer's disease, and schizophrenia. Clinical and experimental studies suggest that estrogen reduces the risk and delays the onset and progression of these diseases. In stroke, estrogen may protect against ischemic damage by reducing mortality and infarct volume. In Alzheimer's disease, estrogen may lower the risk of cognitive decline by reducing amyloid deposition and enhancing cholinergic neurotransmission. In schizophrenia, estrogen may protect against neurotoxicity and improve cognitive function. Experimental studies show that estradiol protects neurons from various insults, including oxidative stress, glutamate toxicity, and ischemia. These protective effects may occur through mechanisms independent of estrogen receptor activation, such as direct antioxidant activity, modulation of neurotransmitter systems, or interactions with other survival factors. Estrogen may also enhance synaptic plasticity, axonal sprouting, and neurogenesis. However, the optimal dose and form of estrogen for neuroprotection remain unclear, and potential risks, such as increased stroke risk with estrogen receptor antagonists, must be considered. The role of estrogen in neuroprotection is complex, involving both direct and indirect mechanisms, and further research is needed to fully understand its therapeutic potential.Estradiol exhibits neuroprotective effects in various neurological conditions, including stroke, Alzheimer's disease, and schizophrenia. Clinical and experimental studies suggest that estrogen reduces the risk and delays the onset and progression of these diseases. In stroke, estrogen may protect against ischemic damage by reducing mortality and infarct volume. In Alzheimer's disease, estrogen may lower the risk of cognitive decline by reducing amyloid deposition and enhancing cholinergic neurotransmission. In schizophrenia, estrogen may protect against neurotoxicity and improve cognitive function. Experimental studies show that estradiol protects neurons from various insults, including oxidative stress, glutamate toxicity, and ischemia. These protective effects may occur through mechanisms independent of estrogen receptor activation, such as direct antioxidant activity, modulation of neurotransmitter systems, or interactions with other survival factors. Estrogen may also enhance synaptic plasticity, axonal sprouting, and neurogenesis. However, the optimal dose and form of estrogen for neuroprotection remain unclear, and potential risks, such as increased stroke risk with estrogen receptor antagonists, must be considered. The role of estrogen in neuroprotection is complex, involving both direct and indirect mechanisms, and further research is needed to fully understand its therapeutic potential.