Dr. Oz's Guide to Getting Healthy in Your 40s

Avoid This: Brain Fog

If you're feeling a little sluggish and slow on the uptake, you're not alone. Symptoms of perimenopause include fatigue and memory problems, which may be due in part to fluctuating estrogen levels. For an energy boost that might also give you a cognitive spark, try a glass of the phytoestrogen-rich green drink I swear by. To make four eight-ounce servings, combine two cups spinach, two cups cucumber, one bunch celery, a half inch or teaspoon gingerroot, one bunch parsley, two apples, the juice of one lime, and the juice of half a lemon in a blender, and mix until liquid.