Annual Review of Gerontology and Geriatrics, Volume 9, 1989: by M. Powell Lawton PhD

By M. Powell Lawton PhD

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By M. Powell Lawton PhD

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1986) report a positive relationship between phosphorus intake and bone density in women aged 35-65 years. Elevated dietary phosphorus decreases urinary calcium excretion and may partially counteract the calciuric effect of dietary protein (vide infra). An exception to this general observation may be the phosphorus supplied in phosphate form in carbonated drinks, which is unaccompanied by natural dietary constituents (Spencer, Kramer, & Osis, 1988). High Protein Intake For many years it has been well known that protein intake alters calcium requirements by increasing urinary losses; this topic has been recently reviewed (Yuen, Draper, & Trilok, 1984).

1976) actually found a slight improvement in calcium balance as a result of phosphate therapy for osteoporosis. Freudenheim et al. (1986) report a positive relationship between phosphorus intake and bone density in women aged 35-65 years. Elevated dietary phosphorus decreases urinary calcium excretion and may partially counteract the calciuric effect of dietary protein (vide infra). An exception to this general observation may be the phosphorus supplied in phosphate form in carbonated drinks, which is unaccompanied by natural dietary constituents (Spencer, Kramer, & Osis, 1988).

In addition, supplemental vitamin D has been used, along with calcium therapy, to increase net calcium absorption (Francis & Peacock, 1987; Riggs, 1988) and to increase metacarpal (cortical) bone mass (Nordin, Baker, Horsman, & Peacock, 1985). Gallagher et al. 5 jig per day of calcitriol to postmenopausal women and found an increase in 26 GERIATRIC HEALTH ISSUES bone mass, calcium absorption, and calcium balance. However, Aloia and coworkers (1988) found no indication that calcitriol increases bone formation.

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