Lara Marin, nutritionist and nurse: "Women can't be weighed on different days of the month."

In a video posted on Instagram, healthcare professional Lara Marín has exposed a problem that, according to her, remains common in many clinics. Specifically, she criticizes the continued use of weight as an objective measure without considering the phase of the menstrual cycle a woman is in. "If you weigh me during the follicular phase and then during the premenstrual phase , it will seem like I have more weight, and that's not actually the case," she says. The reason, she explains, is fluid retention , which varies throughout the month.

Marín maintains that women have greater body variability than men and that this fluctuation should be taken into account. "We don't train the same; our weight fluctuates a lot," she points out. Therefore, she believes the scale should not be the primary instrument for assessing health . Even the most advanced devices, she warns, offer misleading readings if used without taking hormonal changes into account. As a result, many women end up frustrated by results that don't correspond to reality .

For those who still choose to weigh themselves, she recommends always following the same pattern: the same cycle phase and the same time of day . "Some women can weigh up to two kilos in a single day," she comments. This difference, she explains, can lead to misinterpretations if measurements aren't compared under similar conditions. She insists that the number shown on a scale can't be understood as absolute or isolated data . The important thing, she remembers, is to observe the whole picture and the context.

Lara Marín's message focuses on a still-unmet need: adapting medical evaluation criteria to female physiology . Her experience as a nutritionist and nurse has led her to question widespread practices that fail to consider hormonal differences between the sexes. "I would throw that scale in the trash," she says. And with that, she calls for a review of protocols and to prevent women's bodies from being assessed with tools that don't take into account their cyclical nature.

In a video posted on Instagram, healthcare professional Lara Marín has exposed a problem that, according to her, remains common in many clinics. Specifically, she criticizes the continued use of weight as an objective measure without considering the phase of the menstrual cycle a woman is in. "If you weigh me during the follicular phase and then during the premenstrual phase , it will seem like I have more weight, and that's not actually the case," she says. The reason, she explains, is fluid retention , which varies throughout the month.