Can I lose weight with intermittent fasting during perimenopause?

Intermittent fasting (IF) can be effective for perimenopausal women but requires more cautious approach than younger women. Perimenopausal women have different hormonal sensitivity - too long or too frequent fasting can raise cortisol, disrupt thyroid function, and worsen symptoms like hot flashes and insomnia. Suitable IF approach: (1) Start with 12:12 (12h fast, 12h eating) for 2-4 weeks for adaptation. (2) Progress to 14:10 (14h fast, typically from evening to 10am next day) - most popular and usually tolerable. (3) 16:8 (16h fast, 8h eating window) suitable for women feeling good with IF but monitor symptoms. AVOID: 24-hour fasts, OMAD (one meal a day), or daily IF - can worsen cortisol and thyroid. Important: high-quality protein 1.2-1.5g/kg body still critical for fighting sarcopenia, so eating window must include optimal protein. Combine with: resistance training 2-3x weekly, 7-8h sleep, reduce refined sugar. For Muslim women, Ramadan is natural IF - however daily fasting all month can be hard on perimenopausal women with severe symptoms; consider religious accommodation if needed. Discuss with obstetrics and gynaecology specialist or dietitian if you experience amenorrhea (abnormal period stoppage), worsening fatigue, or worse menopausal symptoms with IF.