Preventing PMS-Related Weight Gain

On her website, Dr. Lissa Rankin hosts a medical blog in the spirit of her upcoming book What’s Up Down There? Questions You’d Only Ask Your Gynecologist If She Was Your Best Friend. Much of what she addresses in the blog are questions from patients and community members. If you have a question you’d like Dr. Rankin to answer, you can submit it for consideration here.

Q: For a week before my period, Iím hungry 24/7. Iím really sick of PMS sabotaging my weight loss goals. Help!

I hear you, girlfriend.† Youíre eating salads, taking daily walks and making progress nurturing you body towards your optimal body weight, then THWACK! That time of the month hits, and youíre jonesing for chocolate.† Sounds like you suffer from what we docs call PMS-C, a type of PMS characterized by cravings for sweets, increased appetite, fatigue, headaches, and hypoglycemic episodes that may lead to dizziness, lightheadedness, or- in severe cases- fainting.

Although many theories about what causes PMS have been bantered around in the medical literature, a clear answer has never surfaced.† We suspect that those who suffer from PMS-C are responding to hormonal fluctuations that affect blood sugar, probably by making cells more sensitive to insulin, which lowers blood sugar, leading to blood sugar crashes that trigger mad dashes to the candy and potato chip aisles.† After you stuff your face with Ho Hoís, your insulin levels spike, causing your blood sugar to drop yet again. And so the cycle continues.

Although Iím a big fan of loving your body exactly the way it is- curves, pudge, and all- I understand that for some, weight loss is critical to optimizing your health and vitality. To avoid weight gain during the luteal (second half) of your menstrual cycle, resist the urge to indulge in sweets and carbs and stabilize your blood sugar with low glycemic index foods that donít bump up your insulin levels much.

Healthy choices include lean proteins (fish, chicken breast, eggs), veggies, and whole grains such as brown rice, quinoa, or barley.† For even more effective blood sugar stabilization, drink green vegetable juice. Keep healthy snacks, such as almonds, olives, or carrot sticks, on hand to combat cravings. This kind of diet will knock out most of your cravings, so that, even if PMS hunger leads you to consume more food, you should still be on track for your weight loss goals.

If you know what you should do and still find yourself grabbing for the Hershey bar, it may be your bodyís way of begging for more magnesium. Since magnesium is needed to help insulin bind to cell receptors, magnesium deficiency may worsen chocolate cravings. And- yes, you guessed it- chocolate contains magnesium.† (Ah, the body is brilliant.) Supplementing with 300-400 mg of magnesium may help. Evening primrose oil, chaste tree berry, and natural progesterone may also alleviate PMS symptoms.


Jennifer C.
Past Member 4 years ago


iii q.
g d c.4 years ago

ok, magnesium... thx

iii q.
g d c.4 years ago

hmm... magnesium... okay. ty

Susana L.
sue l.5 years ago


ijaz khan
ijaz khan5 years ago

Good informaiton thanks.

Kay O.
Kay O.6 years ago

Thanks for the insight on magnesium deficiency, will check
that out.

gail d.
gail dair6 years ago


6 years ago

No PMS at my age :))))))))

Camilla Vaga
Camilla Vaga6 years ago

interesting, I love chocolate all days

Kerrie G.
Kerrie G.6 years ago

This is huge issue for women (and the men in their lives). Thanks for posting.