Toast the pine nuts dry in a skillet until they turn golden brown and fragrant. Watch them carefully, as they burn easily. Let them cool on a plate.
Distribute the arugula over a large plate and loosely drape the roast beef slices over it. Sprinkle the capers over the top; their salty sharpness brings the lean meat to life.
Whisk together the olive oil, lemon juice, mustard and some black pepper into a smooth dressing and drizzle it over the salad. Scatter the pine nuts over the top and finish by shaving thin flakes of Parmesan cheese over everything. Lean red meat provides iron and protein, while the olive oil and pine nuts deliver the fats your hormone balance needs.