Donc au passage quand Flahaut dit qu'il y a aucune association défavorable dans cette étude, je ne suis pas trop d'accord. Méfiez-vous des vulgarisateurs, même médecins, et encore plus quand ils ne citent pas de source.
Une étude "parapluie" de 2024 a refait le travail:
https://www.mdpi.com/2072-6643/17/17/2723Ils trouvent eux-aussi globalement que c'est sans doute légèrement positif:
Updated meta-analyses showed that total dairy (RR: 0.96), milk (RR: 0.97), and yogurt (RR: 0.92) were significantly associated with reduced CVD risk. Total dairy and low-fat dairy were inversely linked to hypertension (RRs: 0.89, 0.87), and milk and low-fat dairy were associated with reduced stroke risk. Small-study effects were absent for most associations. Credibility was rated as “weak” for most associations, with total dairy and stroke, and total dairy and hypertension showing "suggestive" evidence. For bone health, dairy—especially milk—was linked to higher bone mineral density (BMD). Evidence on osteoporosis risk was mixed, and while total dairy and milk showed inconsistent associations with fractures, cheese and yogurt showed more consistent protective effects. Limited evidence suggested milk may reduce bone resorption markers.
Mais ils sont quand même plus prudents sur les conclusions car on manque d'étude contrôlée pour prouver la causalité en plus de la corrélation.
Le fait que les méta-études soient autant dispersées invite à la prudence sur la puissance de l'effet:
Several meta-analyses have investigated the relationship between dairy consumption and various cardiovascular outcomes, yet the findings were inconsistent [24,25,26,27,28]. Some studies, like Chen et al. (2022), found total dairy intake was linked to lower risks of hypertension, CHD, and stroke, though results varied by dairy type [24]. Others, such as Jakobsen et al. (2021) [25] and Naghshi et al. (2022) [26], reported mixed effects depending on the type and fat content of dairy. While some showed protective associations for cheese or total dairy [25], others noted increased risks with high-fat milk [26]. Similarly, Mazidi et al. (2019) found inverse associations for total dairy and cheese intake with all-cause and cerebrovascular mortality but also reported increased CHD mortality with milk consumption [27]. In contrast, Bechthold et al. (2019) found no significant associations between dairy intake and CHD or stroke risk [28]. These varied and sometimes contradictory results highlight the importance of an umbrella review that systematically synthesizes existing evidence and updates it with newly available data.