Your cycle and your cravings: tracking food and hormones together

A lot of people notice they want different food at different points in their cycle: more chocolate, more carbs, bigger portions in the week before their period. The research backs up a version of this, but it's gentler and more variable than the internet tends to suggest. Which is exactly why tracking your own cycle is worth more than assuming.

What the studies actually show

The menstrual cycle has two main stretches: the follicular phase from your period through ovulation, and the luteal phase from ovulation until your next period, when progesterone is high.

• A 2025 systematic review and meta-analysis found that energy intake is, on average, modestly higher in the luteal phase than in the follicular phase¹.
• A narrative review of the same literature describes intake tending to dip around ovulation and rise later in the cycle, while also pointing out that studies use very different methods and the effect isn't universal².
• Looking closer than total calories, one study found the mix of nutrients and food groups people ate shifted across the cycle, with some phases higher in particular macronutrients³.
• Changes in appetite and cravings across the cycle have been linked to shifting hormone levels and markers of inflammation⁴.

Put together: there's a real, average tendency toward eating a bit more in the luteal phase, but how much, and whether cravings come with it, varies a lot from person to person. Group averages don't tell you about you.

Why a shared timeline helps

If your cravings and your symptoms both move with your cycle, tracking them in a separate period app means you never see them next to your meals. Bellynote puts period days on the same calendar as everything else you log, so you can look for the connections directly:

• Whether the pre-period chocolate is an actual monthly pattern or just a couple of memorable months
• Whether bloating, headaches, or energy dips cluster in a particular phase. Bellynote factors cycle phase in alongside food when it surfaces correlations, so a symptom that's really cycle-linked doesn't get misread as a food reaction
• Whether your portions or snacking genuinely change in the luteal phase, which is easier to make peace with once you can see it coming

None of this is about eating "better" during your cycle. Bellynote notices patterns; it doesn't hand out rules. A luteal-phase appetite bump is a normal thing a lot of bodies do.

No double logging

If you already record your period in Apple Health or Health Connect, Bellynote can do a read-only import of those entries so they line up with your symptoms and meals automatically. It never writes anything back to those apps.