HOME >> BIOLOGY >> NEWS
Lack of sun does not explain low vitamin D in elderly who are overweight

ntly decreased as body fat increased. Sunlight exposure could not account for low vitamin D stores in older people with high percent body fat, explains Harris.

Vitamin D is called the sunshine vitamin because it is produced by the body when the skin is exposed to ultraviolet (UV) rays from the sun. Vitamin D can also be obtained from foods such as fish and fortified milk and from supplements. When this fat-soluble vitamin enters the body it is converted in the liver to 25-hydroxyvitamin D. This is one of several important forms of vitamin D, and is the form that researchers and clinicians use as an indicator of vitamin D status in individuals. Vitamin D is especially critical in maintaining bone health, and there is evidence that many older Americans have low blood levels of vitamin D, which can put them at risk for bone fractures and osteoporosis, says Dawson-Hughes, who is also a professor at Tufts University School of Medicine.

These results cannot be carried over to other populations, such as young people, or elderly living in different climates. However, if low vitamin D stores are not attributed to low sunlight exposure in this population, it suggests that we should explore other possibilities, says Harris. The most likely explanation seems to be that vitamin D is sequestered in fat tissue, reducing its entry into the blood.


'"/>

Contact: Siobhan Gallagher
siobhan.gallagher@tufts.edu
617-636-6586
Tufts University, Health Sciences
7-Jun-2007


Page: 1 2

Related biology news :

1. X-ray images help explain limits to insect body size
2. New model for autism suggests women carry the disorder and explains age as a risk factor
3. Study explains how pathogens evolve to escape detection
4. Small molecules may explain psoriasis
5. The kapok connection -- Study explains rainforest similarities
6. Study of unexplained respiratory infections leads researchers to new virus
7. Mosquito genes explain response to climate change
8. Gene analysis might explain ethnic differences in sensitivity to chemotherapy in lung cancer
9. Harvard and U. Pittsburgh researchers explain carbon monoxides anti-inflammatory effects
10. Scientists find hormone activity explains adolescent mood swings
11. New DNA study helps explain unique diversity among Melanesians

Post Your Comments:
*Name:
*Comment:
*Email:


(Date:6/5/2020)... ... , ... Greffex, a pioneering vaccine and gene therapy company based in Houston, ... need for a global perspective to make an impact in a post pandemic world,” ... as an independent, director of the company. , “The Greffex board is excited to ...
(Date:5/28/2020)... ... May 28, 2020 , ... ... announced a new enzyme solution for adjunct liquefaction: AMYLEX® 6T. The innovative ... ability to expand into new segments with locally-sourced raw materials, improve productivity, ...
(Date:5/21/2020)... , ... May 19, 2020 ... ... leading software-as-a-service (SaaS) provider of operations management solutions, today introduced BioMed to ... provides a cloud-based platform for connecting the people and systems around biomedical ...
Breaking Biology News(10 mins):
(Date:6/23/2020)... ... June 22, 2020 , ... Regen Suppliers, the one stop ... buy three, get the fourth unit free with no limit on the amniotic ... as exosomes, have been a game changer for regenerative therapies. The products are ...
(Date:6/19/2020)... ... June 18, 2020 , ... The Vitaspace ... is to join forces to radically prolong life and find a way (medicine or ... period. This project was supported by various scientists from all over the world, doctors, ...
(Date:6/11/2020)... ... June 09, 2020 , ... TRX Systems, developer of ... Solution, a highly accurate, contact tracing solution for identification of employees who ... a core disease control measure, is a key strategy for preventing further spread ...
(Date:6/2/2020)... ... June 01, 2020 , ... As part of its ongoing ... the world, enterprise security solutions provider bitsIO donated time to help two companies ... during self-quarantines and shelter-in-place orders, companies are increasingly concerned about the security of ...
Breaking Biology Technology:
Cached News: