Calcium from food is important for heart and bone health; however, Anderson et al (2016) reported that calcium supplements may increase the risk for coronary artery calcification (CAC) based on a follow-up study of the Multi-Ethnic Study of Atherosclerosis (MESA). Cultures in the Blue Zone that do not eat dairy have a lower fracture rate even with thin bone walls. They consume the World Health Association's (WHO) recommendation for calcium and consume it in foods. This recommendation is significantly lower than the US recommendation. Dairy is acidic in the blood and requires calcium from the bones to buffer it since blood needs to be at a constant ph. Please let me know your thoughts using the literature to justify your statements.

REFERENCE: Anderson, Kruszka, Delaney et al. Calcium intake from diet and supplements and risk of coronary arty calcification and its progression among older adults: 10-year follow-up of the Multi-Ethnic Study of Atherosclerosis (MESA). J Am Heart Assoc. 2016; doi: 10.1161/JAHA.116.003815