“You need to lose weight to get pregnant.” How many women have been told just this, with no further explanation? The reality is more complex and, fortunately, more interesting: for fertility, the number on the scale matters less than how the body is nourished and composed.
Two women with the same weight can have opposite metabolic situations: one with good muscle mass and an efficient metabolism, the other with little muscle mass, nutritional deficiencies, and silent inflammation. The scale can’t tell the two apart – but the reproductive system can.
How weight is lost also makes a difference. Drastic, overly restrictive diets can worsen fertility: the body, sensing scarcity, scales back functions that aren’t essential for survival – and reproduction is the first to slow down. Cycles that disappear after a severe diet are a crystal-clear signal.
The goal, then, is not to “weigh less” at all costs, but to reach a body composition and nutritional status that tell the body: there are enough resources here for a pregnancy. Sometimes that means losing weight gradually; sometimes it means eating more, and better. That’s why an individual assessment is needed – not a one-size-fits-all formula.

