Science-Backed Nutrition Tips For Women with Dr. Hazel Wallace

What It Covers

Dr. Hazel Wallace, a medical doctor and registered nutritionist, explains how women's nutritional needs shift across hormonal milestones — menstrual cycle phases, perimenopause, menopause, and postpartum — and why standard dietary guidelines based on male research fail to account for these distinct, changing requirements.

Key Questions Answered

• •Luteal phase metabolism: In the second half of the menstrual cycle, resting metabolic rate rises by up to 300 calories per day as progesterone peaks and insulin sensitivity drops. Rather than resisting hunger, prioritize balanced meals pairing fiber-rich carbohydrates with protein and fat to stabilize glucose, reduce cravings, and manage PMS mood symptoms.
• •PMS nutrient targets: Calcium, vitamin D, and magnesium deficiencies are linked to worsening premenstrual and PMDD symptoms. Correcting these through diet or supplementation can reduce symptom severity. PMS and PMDD are cyclical disorders — symptoms appear in the luteal phase and resolve at menstruation — distinguishing them clinically from generalized anxiety or depression diagnoses.
• •Menopause bone and cardiovascular protocol: Estrogen decline at menopause sharply raises cardiovascular disease risk and accelerates bone loss. Prioritize calcium, vitamin D, vitamin K, magnesium, and consistent protein across three meals daily. Add weight-bearing and impact exercise at minimum twice weekly. Monitor cholesterol, blood pressure, and fasting glucose via annual blood work starting in your forties.
• •Supplement audit framework: Start one new supplement at a time, run it for eight weeks, then assess whether symptoms improved. Vitamin D is the one near-universal supplement warranted, especially October through March in northern latitudes. Electrolytes are only necessary for endurance athletes or high-heat training sessions — daily use by recreational exercisers risks excess sodium intake and gradual kidney strain.
• •Doctor visit preparation: Bring a symptom diary and wearable trend data — declining HRV, rising resting heart rate, disrupted sleep — to medical appointments to make vague symptoms concrete and trackable. Explicitly request blood work for iron, vitamin D, and other biomarkers. If dismissed, pursue private lab testing, then consult a registered nutritionist to address suboptimal levels before they become clinical deficiencies.