Cycle syncing has moved from wellness blogs to mainstream conversation, fueled by a femtech industry valued at $66.2 billion in 2025 and projected to reach $255.5 billion by 2035. The idea: align what you eat, how you work and how you rest with the four hormonal phases of your menstrual cycle. Some of the science is genuinely solid. Some of it is running well ahead of the research. Here’s what’s actually true.
What Cycle Syncing Is and Where It Started
The term comes from functional nutritionist Alisa Vitti, who coined it in her 2014 book WomanCode and expanded the concept in her 2020 follow-u...
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