Cinnamon
Cinnamon is a common kitchen spice that contains bioactive compounds (particularly cinnamaldehyde and polyphenols) shown to improve blood sugar control and insulin sensitivity through multiple mechanisms including enhanced insulin receptor signaling and slowed carbohydrate digestion. Research in women with PCOS has demonstrated that 1-3 grams of cinnamon daily (typically as Ceylon cinnamon rather than cassia) can reduce fasting glucose and insulin levels, lower testosterone, and improve menstrual regularity. As one of the most accessible, affordable, and pleasant-tasting natural interventions for PCOS, cinnamon can be easily incorporated into daily meals and beverages alongside other management strategies.