Claim: A decline in estrogen levels during the luteal phase can lead to a drop in brain energy.
Verdict: Unverified (50% confidence)
Explanation: According to Ubie Health and Samphire Neuro, a decline in estrogen during the luteal phase is associated with cognitive changes, such as brain fog, which suggests a potential drop in brain energy. However, these sources do not explicitly confirm that the decline in estrogen directly causes a drop in brain energy, only that cognitive sharpness can dip. Other sources, such as the NIH and Nature, provide background on estrogen's role in cognitive functions but do not directly link estrogen decline ...