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Vitamin D and depressive symptoms in women during the winter: a pilot study. Shipowick CD, Moore CB, Corbett C, Bindler R. Appl Nurs Res. 2009 Aug;22(3):221-5. PMID: 19616172 doi:10.1016/j.apnr.2007.08.001 ESULTS: Vitamin D supplementation was associated not only with an increase in the serum D levels by an average of 27 ng/ml but also with a decline in the BDI-II scores of an average of 10 points. DISCUSSION: This study suggests that supplemental vitamin D3 reduces depressive symptoms.

The amount of energy to be provided by a balanced diet for any person will depend on several factors: age, sex, body size, lifestyle, occupation, and the climate of the area he is in. The proportion of the various food classes in a diet is also not the same for different persons, due to varying physical and physiological requirements..

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3 Winter-Friendly Murabbas That Will Add the Right Sweetness to Your Diet Winter is the perfect time to enjoy tasty Murabbas to one's heart's content. The plummeting temperatures and crisp air announce the arrival of winter. This season is mostly about soaking in the afternoon sun or munching on seasonal foods.The freshness of veggies and fruits you get this season is incomparable. So, to add to the fun, it makes sense to make delicious Murabbas out of these seasonal fruits that could be a treat to your taste buds. https://gongloofoods.blogspot.com/2023/01/3-winter-friendly-murabbas-that-will.html

Estimation of the dietary requirement for vitamin D in free-living adults >=64 y of age. Cashman KD, Wallace JM, Horigan G, Hill TR, Barnes MS, Lucey AJ, Bonham MP, Taylor N, Duffy EM, Seamans K, Muldowney S, Fitzgerald AP, Flynn A, Strain JJ, Kiely M. Am J Clin Nutr. 2009 May;89(5):1366-74. Epub 2009 Mar 18. PMID: 19297462 doi:10.3945/ajcn.2008.27334 Conclusion: To ensure that the vitamin D requirement is met by the vast majority (>97.5%) of adults aged ≥64 y during winter, between 7.9 and 42.8 µg vitamin D/d is required, depending on summer sun exposure and the threshold of adequacy of 25(OH)D. .

Wintertime vitamin D insufficiency is common in young Canadian women, and their vitamin D intake does not prevent it. Vieth R, Cole DE, Hawker GA, Trang HM, Rubin LA. Eur J Clin Nutr. 2001 Dec;55(12):1091-7. PMID: 11781676 INTERPRETATION: The self-reported vitamin D intake from milk and/or multivitamins does not relate to prevention of low vitamin D nutritional status of young women in winter. Recommended vitamin D intakes are too small to prevent insufficiency. Vitamin D nutrition can only be assessed by measuring serum 25(OH)D concentration.

van der Wielen RP, Lowik MR, van den BH, de Groot LC, Haller J, Moreiras O, van Staveren WA (1995) Serum vitamin D concentrations among elderly people in Europe. Lancet 346: 207-210 These findings show that free-living elderly Europeans, regardless of geographical location, are at substantial risk of inadequate vitamin D status during winter and that dietary enrichment or supplementation with vitamin D should be seriously considered during this season.

Low serum 25-hydroxyvitamin D concentrations and secondary hyperparathyroidism in middle-aged white strict vegetarians. Lamberg-Allardt C, Kärkkäinen M, Seppänen R, Biström H. Am J Clin Nutr. 1993 Nov;58(5):684-9. PMID: 8237875 In conclusion, white strict vegetarians are at risk of vitamin D deficiency, at least in the winter, primarily because of a low dietary vitamin D intake, despite a normal sunlight exposure in summer. Low serum 25(OH)D concentrations are accompanied by high S-iPTH concentrations, which also are affected by a low calcium intake. The effect of these changes on bone health remains to be evaluated.

Can vitamin D supplementation prevent winter-time blues? A randomised trial among older women. Dumville JC, Miles JN, Porthouse J, Cockayne S, Saxon L, King C. J Nutr Health Aging. 2006 Mar-Apr;10(2):151-3. PMID: 16554952 CONCLUSIONS: Supplementing elderly women with 800 IU of vitamin D daily did not lead to an improvement in mental health scores.

"Summer vs Winter Mode: Explaining AMPK Last year I read an article which made a statement that has not left my mind. The statement went as follows: "You are only good as your mitochondria." In fact, the more a dwell into the details of human metabolism, the more I sense that this is true - especially with the metabolic syndrome. For those who are not familiar with the concept of mitochondria, they are the tiny energy factories within the cells that produce cellular energy through aerobic means (meaning oxygen). Mitochondria utilize oxygen to ultimately produce Adenosine Triphosphate or simply ATP. ATP relays energy by donating a phosphate bond resulting in Adenosine Diphosphate (ADP). Another phosphate release would entail Adenosine Monophosphate or AMP. ATP is one of the main sources of cellular energy in the body

The curing properties of oranges have been linked with a wide range of health benefits, risks and nutrition facts. The juicy citrus fruits that are in season throughout the winter are loaded with vitamin C and the pigment beta-cryptoxanthin.

The curing properties of oranges have been linked with a wide range of health benefits, risks and nutrition facts. The juicy citrus fruits that are in season throughout the winter are loaded with vitamin C and the pigment beta-cryptoxanthin.

EPIDEMICS' TIMING DETERMINED BY LATITUDEGoing back to 1945, Hope-Simpson discovered that influenza epidemics above 30 degrees latitude in both hemispheres occurred during the six months of least solar radiation and that outbreaks in the tropics almost always occured during the rainy season. He thus concluded, "Latitude alone broadly determines the timing of the epidemics in the annual cycle, a relationship that suggests a rather direct effect of some component of solar radiation acting positively or negatively upon the virus, the human host, or their interaction." That is, something may be regularly reducing our immunity every fall and winter. In 2003 researchers confirmed that influenza epidemics in the tropics occur, with few exceptions, during the rainy season, when vitamin D levels should be falling

Effect of vitamin D deficiency and replacement on endothelial function in asymptomatic subjects. Tarcin O, Yavuz DG, Ozben B, Telli A, Velioglu Ogunc A, Yuksel M, Toprak A, Yazici D, Sancak S, Deyneli O, Akalin S. J Clin Endocrinol Metab. 2009 Jul 7. [Epub ahead of print] PMID: 19584181 doi:10.1210/jc.2008-1212 Conclusions: This study shows that 25(OH)D deficiency is associated with endothelial dysfunction and increased lipid peroxidation. Replacement of vitamin D has favorable effects on endothelial function. Vitamin D deficiency can be seen as an independent risk factor of atherosclerosis. Hypovitaminosis D associated endothelial dysfunction may predispose to higher cardiovascular disease in the winter.

SSeason of diagnosis is a prognostic factor in Hodgkin's lymphoma: a possible role of sun-induced vitamin D. Porojnicu AC, Robsahm TE, Ree AH, Moan J. Br J Cancer. 2005 Sep 5;93(5):571-4. PMID: 16136030 doi:10.1038/sj.bjc.6602722 Epidemiological data for this period indicate that season of diagnosis is a strong prognostic factor for Hodgkin's lymphoma, with approximately 20% lower case fatality for patients diagnosed during autumn vs winter diagnosis (RR = 0.783, 95% CI,-0.62 to 0.99; P = 0.041). Notably, the improved autumnal survival rate was higher than 60% (RR = 0.364, 95% CI, -0.15 to 0.87; P = 0.025) for patients younger than 30 years. This finding may be related to higher endogenous levels of vitamin D in autumn, with a favourable influence on the conventional therapy. In conclusion, we have found that the prognosis of Hodgkin's lymphoma is significantly correlated with the season of diagnosis, particularly for patients younger than 30 years. This seasonal effect is presumably due to the vitamin D3 synthesis in skin during sun exposure. The present findings should encourage further investigations of the possible adjuvant role of vitamin D derivatives in cancer therapy

How much vitamin D3 do the elderly need? Viljakainen HT, Palssa A, Kärkkäinen M, Jakobsen J, Lamberg-Allardt C. J Am Coll Nutr. 2006 Oct;25(5):429-35. PMID: 17031013 Conclusions: A clear dose response was noted in S-25-OHD to different doses of vitamin D3. The recommended dietary intake of 15 µg is adequate to maintain the S-25-OHD concentration around 40-55 nmol/L during winter, but if the optimal S-25-OHD is higher than that even higher vitamin D intakes are needed. Interestingly, subjects with lower vitamin D status at baseline responded more efficiently to supplementation than those with more adequate status

Not enough vitamin D: health consequences for Canadians. Schwalfenberg G. Can Fam Physician. 2007 May;53(5):841-54. Review PMID: 17872747 Conclusion Low levels of VTD are considered a major public health problem in Canada, especially during the winter. Those with risk factors should be screened for low 25(OH)D levels and repletion therapy instituted if needed. Researchers have estimated that the oral dose of vitamin D3 to attain and maintain 25(OH)D levels >80 nmol/L is 2200 IU/d if baseline levels are 20 to 40 nmol/L, 1800 IU/d if levels are 40 to 60 nmol/L, and 1160 IU/d if levels are between 60 and 80 nmol/L.64 We need to ensure that patients have healthy blood levels of 25(OH)D to prevent levels of parathyroid hormone from rising and to maximize absorption of calcium, magnesium, and phosphate. Positive effects on bone are marginal at best unless patients consume at least 800 IU/d of VTD. The emerging and exciting role of the VTD receptor and the actions of VTD in maintaining health in other cell types have become more apparent during the last decade.

Half of the patients with an acute hip fracture suffer from hypovitaminosis D: a prospective study in southeastern Finland. Nurmi I, Kaukonen JP, Lüthje P, Naboulsi H, Tanninen S, Kataja M, Kallio ML, Leppilampi M. Osteoporos Int. 2005 Dec;16(12):2018-24. Epub 2005 Aug 24. PMID: 16133642 Half of the patients with a hip fracture suffered from hypovitaminosis D. The situation was worst in institutional and residential care, although there are personnel for taking care of vitamin D supplementation. In the late summer, one-third and in late winter two-thirds of the patients suffered from hypovitaminosis D. The geographical location of Finland indicates extensive efforts to increase the use of vitamin D supplements among elderly.

Differences in vitamin D status between countries in young adults and the elderly. McKenna MJ. Am J Med. 1992 Jul;93(1):69-77. PMID: 1385673 PURPOSE: To compare vitamin D status between countries in young adults and in the elderly. MATERIALS AND METHODS: Reports on vitamin D status (as assessed by serum 25-hydroxyvitamin D) from 1971 to 1990 were reviewed. Studies were grouped according to geographic regions: North America (including Canada and the United States); Scandinavia (including Denmark, Finland, Norway, and Sweden); and Central and Western Europe (including Belgium, France, Germany, Ireland, The Netherlands, Switzerland, and the United Kingdom). RESULTS: Vitamin D status varies with the season in young adults and in the elderly, and is lower during the winter in Europe than in both North America and Scandinavia. Oral vitamin D intake is lower in Europe than in both North America and Scandinavia. Hypovitaminosis D and related abnormalities in bone chemistry are most common in elderly residents in Europe but are reported in all elderly populations. CONCLUSIONS: The vitamin D status in young adults and the elderly varies widely with the country of residence. Adequate exposure to summer sunlight is the essential means to ample supply, but oral intake augmented by both fortification and supplementation is necessary to maintain baseline stores. All countries should adopt a fortification policy. It seems likely that the elderly would benefit additionally from a daily supplement of 10 micrograms of vitamin D.

Vitamin D deficiency and bone health in healthy adults in Finland: could this be a concern in other parts of Europe? Lamberg-Allardt CJ, Outila TA, Kärkkainen MU, Rita HJ, Valsta LM. J Bone Miner Res. 2001 Nov;16(11):2066-73. PMID: 11697803 Low vitamin D status was prevalent in these young adults in northern Europe in winter, although the vitamin D intake met the recommendation. This probably is not a local problem for northern Europe, because the natural sources of vitamin D are scarce and fortification is not very common in Europe, and with the exception of the southern part of Europe, sunshine is not very abundant in this part of the world. Thus, the results of this study indicate that more attention should be focused on vitamin D status and the sources of vitamin D in these countries.

This is an announcement to alert readers to a crucial email I received from a physician who has evidence vitamin D is protective against H1N1. I ask you, the reader, to contact your representatives in Washington to help protect Americans, especially children, from H1N1 before winter comes.

Hypovitaminosis D in an Italian population of healthy subjects and hospitalized patients. Romagnoli E, Caravella P, Scarnecchia L, Martinez P, Minisola S. Br J Nutr. 1999 Feb;81(2):133-7. PMID: 10450331 The results of the present study emphasize the importance of 25-hydroxyvitamin D measurement, and the need to increase vitamin D intake in Italy; foodstuff fortification and supplement use must be considered in order to prevent negative effects of vitamin D deficiency on skeletal integrity. All hospitalized patients, both in summer and in winter, are characterized by the highest prevalence of hypovitaminosis D, especially the older patients. Medical inpatients may be at risk for vitamin D deficiency,