“Large studies, including the Nurses' Health Study, found no clear link between milk consumption and fewer bone fractures, meaning the belief that milk is needed for strong bones came from dairy industry marketing rather than science." Accompanying post text: "Where did you learn you need milk for strong bones? Not from science. From…”

**The cited study is real and the post characterizes it correctly.** The 1997 study examined whether higher intakes of milk and other calcium-rich foods during adult years can reduce the risk of osteoporotic fractures, using a 12-year prospective design among 77,761 women aged 34 through 59 in 1980 who had never used calcium supplements, with dietary intake assessed by food-frequency questionnaire in 1980, 1984, and 1986 . Fractures of the proximal femur (n=133) and distal radius (n=1046) from low or moderate trauma were self-reported on biennial questionnaires, and the authors found no evidence that higher intakes of milk or calcium from food sources reduce fracture incidence. Women who drank two or more glasses of milk per day had relative risks of 1.45 for hip fracture (95% CI 0.87, 2.43) and 1.05 for forearm fracture (95% CI 0.88, 1.25) compared with women who drank less. Note that the hip fracture confidence interval crosses 1.0, so this was a non-significant result, not evidence of harm. **The same research group, using the same cohort with longer follow-up, later reported the opposite.** Feskanich and colleagues had previously reported no significant associations between milk consumption and hip fractures in the NHS and HPFS cohorts, but their newer study had increased statistical power with additional years of follow-up and more hip fracture cases . That study examined long-term consumption of milk and other dairy foods and hip fracture risk in 80,600 postmenopausal women and 43,306 men over 50, followed for up to 32 years. Each serving of milk per day was associated with a significant 8% lower risk of hip fracture in men and women combined (RR = 0.92, 95% CI 0.87 to 0.97). Feskanich herself framed this directly: the Swedish study showing increased hip fracture risk with higher milk intake in women had received considerable attention, so finding a decreased risk with higher milk intake in both men and women shows, in her words, that "the book is not yet closed on this topic." A 2023 analysis of the Nurses' Health Study reached a similar conclusion. In 103,003 females with mean age 48 followed from 1980 to 2004, proportional hazards models estimated risk of first fragility fracture of the wrist, hip, or vertebrae by intakes of total dairy, milk, yogurt, or cheese, with 5,495 incident fracture cases documented. After controlling for confounders, consumption of two or more servings per day of total dairy compared with less than one serving per day was associated with lower fracture risk. That study reported that higher intakes of both total dairy and milk were associated with lower risk of fragility fracture, independent of intakes of calcium, vitamin D, or protein from non-dairy sources; higher cheese intake was associated with reduced fracture risk, while no association was observed for yogurt. The authors explicitly contextualized the 1997 paper: the earliest study was conducted in 1997 with up to 12 years of follow-up (median 8.3 years) in females aged 34 to 59 at baseline, and concluded that higher milk consumption did not prevent hip or wrist fracture. **Randomized controlled trial evidence, which sits above cohort studies in the evidence hierarchy, directly contradicts "never proven."** Iuliano and colleagues led a 2-year cluster randomized controlled trial in Australian residential care facilities: 27 facilities were randomized to provide residents with greater amounts of milk, yogurt and cheese containing 562 mg of calcium and 12 g of protein, for a total daily intake of 1,142 mg of calcium and 69 g of protein, while 29 control facilities had residents consuming an average of 700 mg calcium and 58 g protein per day. The study found a 33 per cent reduction in all fractures, a 46 per cent reduction in hip fractures, and an 11 per cent reduction in falls, with significant reduction apparent between three and five months after the trial began. **The broader literature is genuinely mixed, not settled in either direction.** A 2020 meta-analysis found reductions in hip fracture risk with milk consumption only among American adults and not among Scandinavian adults, possibly because milk products are more commonly fortified with vitamin D in the former population. Its authors concluded that cumulative evidence from prospective cohort studies "reassuringly suggests" that hip fracture risk may not be elevated among people who consume milk, yogurt and cheese, and that greater consumption of milk or yogurt may even be associated with lower risk. Pointing the other way, a 2023 dose-response analysis of 13 studies covering 486,950 adults and 15,320 fractures found that among dairy subfractions the largest body of data was for milk intake, which was directly and significantly associated with hip fracture risk, moderated at intakes above 400 g/d. A 2014 analysis also found no protective effect of teenage milk intake: in more than 96,000 white postmenopausal women from the NHS and men aged 50 and older from the HPFS, teenage milk consumption was not associated with hip fracture in women (RR = 1.00 per glass per day; 95% CI 0.95 to 1.05) and was associated with greater risk in men (RR = 1.09; 95% CI 1.01 to 1.17), although after further adjustment for height no significant association remained in men (RR = 1.06; 95% CI 0.98 to 1.14). **The post's calcium guidance is accurate.** UK guidance holds that most adults need 700 mg of calcium a day, including during pregnancy, and that those at risk of osteoporosis or taking osteoporosis medicine may be advised to increase intake to around 1,000 mg. It also states that people can usually get all the calcium they need from food, using supplements only to top up if dietary intake is insufficient. **Dairy marketing is real and substantial.** Congress created the National Dairy Promotion and Research Board in 1983 at the dairy industry's prompting, with the purpose of promoting dairy products through marketing and "nutritional education," funded by a fee dairy farmers pay based on the weight of milk sold. In 1984 the National Dairy Board coined the slogan "Milk: It Does a Body Good," promoting milk as a way to stay strong and healthy. Checkoff programs began in the 1930s as a voluntary fee that farmers could opt into, directing a small sum from every purchase toward marketing the specific commodity. **Plant calcium sources are real but bioavailability varies significantly.** One analysis identified kale, finger millet and fortified white bread as the top three bioaccessible plant calcium sources, with kale providing five times more bioaccessible calcium than one serving of skimmed milk; however, low bioaccessibility was found in some plant-based beverages, tofu, dried figs and tahini, attributed to high oxalate and phytate content and to the low solubility of tricalcium phosphate used for fortification. When both bioaccessibility and recommended serving portions were considered, only three products qualified as good calcium sources requiring 0.2 to 1.4 servings to equal the bioaccessible supply from skimmed milk. ---