Menopause hot flashes and night sweats are a normal part of aging, but can cause discomfort for many years for many women. In general, menopause help is discussed in terms of reductions in hot flashes, since they are the most common discomfort.
Research has shown that different populations often experience different hot flash rates. In a Japanese study, only 24% of perimenopausal women and 29% of postmenopausal women experienced hot flashes (Medical Reference 1). Studies in China have reported that less than 25% of postmenopausal women endured hot flashes (Medical References 2-4). In contrast, it has been reported that approximately 40-90% of U.S. women experience uncomfortable hot flashes (Medical Reference 5-10). It has been suggested that dietary differences, including soy protein consumption, may be partly responsible for the fewer menopause hot flashes observed in Eastern and Asian countries.
Many studies have been conducted to determine the effectiveness of soy protein products for menopause hot flash reduction (Medical References 11-13). The results of these studies are considerably varied with menopause hot flash reduction improved from approximately 20-70% from the beginning of the study.
On average soy protein products appear to provide menopause help by reducing hot flashes by about 45% on average. Additionally, some of these studies reported that consumption of soy protein products helped improve overall menopause discomfort scores and quality of life (Medical References 14, 15).
Other studies have reported that soy isoflavones, the phytonutrient substances found in soy, may help reduce hot flashes and provide overall menopause comfort (Medical References 15-19).
There is no consensus regarding whether a specific group of women receive greater menopause hot flash reduction, or if different amounts provide different effectiveness; however, there is some evidence that women who endure more than 5 hot flashes per day receive the greatest menopause help from soy (Medical Reference 12) and that higher amounts of soy protein may provide additional menopause hot flash reduction (Medical Reference 20).
In some studies these reductions were not always significantly different from the placebo control group. Overall these studies suggest that the addition of soy protein products to the diet may provide natural hot flash help.
Delicious soy protein products include soy bars, soy shakes, soy nuts, soy protein chips, and soy pastas. Soy protein products provide an easy and convenient way to incorporate soy into your diet for menopause help.
1. Melby MK. Vasomotory symptom prevalence and language of menopause in Japan. Menopause 2005; 12:250-257.
2. Shea JL. Parsing the ageing Asian woman: symptom results from the China Study of Midlife Women. Maturitas 2006; EPub ahead of print; doi: 10.1016/j.maturitas.2005.12.010
3. Chim H, Tan BH, Ang CC, Chew EM, Chong YS, Saw SM. The prevalence of menopausal symptoms in a community in Singapore. Maturitas 2002; 41:275-282.
4. Haines CJ, Chung TKH, Leung DHY. A prospective study of the frequency of acute menopause symptoms in Hong Kong Chinese women. Maturitas 1994; 18:175-181.
5. Gold EB, Sternfeld B, Kelsey JL, Brown C, Mouton C, Reame N, Salamone L, Stellato R. Relation of demographic and lifestyle factors to symptoms in multi-racial/ethnic population of women 40-55 years of age. American Journal of Epidemiology 2000; 152:463-473.
6. Xu J, Bartoces M, Neale AV, Dailey RK, Northrup J, Schwartz KL. Natural history of menopause symptoms in primary care patients: a MetroNet Study. Journal of the American Board of Family Pract 2005; 18:374-382
7. Randolph Jr. JF, Sowers MF, Bondarenko I, Gold EB, Greendale GA, Bromberger JT, Brockwell SE, Matthews KA. The relationship of longitudinal change in reproductive hormones and vasomotor symptoms during the menopausal transition. Journal of Clinical Endocrinology & Metabolism 2005: 90:6106-6112.
8. Whiteman MK, Staropoli CA, Langenbert PW, McCarter RJ, Kjerulff KH, Flaws JA. Smoking, body mass, and hot flashes in midlife women. Obstetrics & Gynecology 2003; 101:264-272.
8. Barnabei VM, Grady D, Stovall DW, Cauley JA, Lin F, Stuenkel CA, Stefanick ML, Pickar JH. Menopausal symptoms in older women and the effects of treatment with hormone therapy. Obstetrics & Gynecology 2002; 100:1209-1218.
10. Feldman BM, Voda A, Gronseth E. The prevalence of hot flash and associated variables among perimenopausal women. Res Nurs Health 1985; 8:261-268.
11. Kronenbert F, Fugh-Berman A. Complementary and alternative medicine for menopausal symptoms: a review of randomized, controlled trials. Annals of Internal Medicine 2002; 137:805-813.
12. Messina M, Hughes C. Efficacy of soyfoods and soybean isoflavone supplements for alleviating menopausal symptoms is positively related to initial hot flush frequency. Journal of Medicinal Food 2003; 6:1-11.
13. Huntley AL, Ernst E. Soy for the treatment of perimenopausal symptoms – a systematic review. Maturitas 2004; 47:1-9.
14. Dupree K, Basaria S, Ojumu A, Bruno TW, John M, Wisniewski A, Dobs AS. Effects of Soy on Quality of Life in Post-Menopausal Women. The Endocrine Society Annual Meeting 2005, San Diego, CA, June 4 – 7 (Abstract).
15. Han KK, Soares JM, Haidar MA, de Lima GR, Baracat EC. Benefits of soy isoflavone therapeutic regimen on menopausal symptoms. Obstet Gynecol. 2002;99:389-394.
16. Scambia G, Mango D, Signorile PG, Anselmi-Angeli RA, Palena C, Gallo D, Bombardelli E, Morazzoni P, Riva A, Mancuso S. Clinical effects of a standardized soy extract in postmenopausal women: a pilot study. Menopause. 2000;7:105-111.
17. Faure ED, Chantre P, Mares P. Effects of a standardized soy extract on hot flushes: a multicenter, double-blind, randomized, placebo-controlled study. Menopause. 9:329-334.
18. Crisafulli A, Marini H, Bitto A, Altavilla D, Squadrito G, Romeo A, Adamo EB, Marini R, D’Anna R, Corrado F, Bartolone S, Frisina N, Squadrito F. Effects of genistein on hot flushes in early postmenopausal women: a randomized, double-blind EPT- and placebo-controlled study. Menopause. 2004;11:400-404.
19. Nahas EP, Neto JN, de Luca L, Traiman P, Pontes A, Dalben I. Benefits of soy germ isoflavones in postmenopausal women with contraindication for conventional hormone replacement therapy. Maturitas. 2004:48:372-380.
20. Jou HJ, Ling PY, Wu SC. Comparison of 70 mg and 35 mg isoflavone soya supplement for menopause symptoms. Intl J Gynecol Obstet 2005; (In Press)