Dinner earlier helps, protein breakfast is overblown

Shifting your evening meal earlier might slightly improve morning alertness, but a high-protein breakfast is not the magic bullet for late-winter SAD.

The logic is sound: eating late can mess with your circadian rhythm, and SAD is fundamentally a circadian disorder. Moving dinner to at least three hours before bed gives your body time to process food before melatonin kicks in. That alone can make mornings marginally easier. But the effect is small—think of it as oiling a squeaky hinge, not fixing the engine.

As for the high-protein breakfast? That’s mostly bro-science applied to a mood disorder. Protein increases tyrosine and dopamine in theory, but in practice it’s not going to counteract the lack of morning light that drives SAD. You’re better off with a consistent breakfast time and some bright light exposure. If you want to tweak protein timing, fine, but don’t expect to wake up cheerful.

Light therapy and dawn simulators are still the heavy lifters here. Meal timing is just a supporting actor.