alexa Incidence of Taste Disorder and Umami Taste Disorder among the Japanese Elderly and Youth | OMICS International
ISSN: 2155-9600

Journal of Nutrition & Food Sciences
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Research Article

Incidence of Taste Disorder and Umami Taste Disorder among the Japanese Elderly and Youth

Takashi Sasano1*, Shizuko Satoh-Kuriwada1, Naoto Kaneta1, Noriaki Shoji1, Misako Kawai2 and Hisayuki Uneyama2

1Division of Oral Diagnosis, Department of Oral Medicine and Surgery, Tohoku University Graduate School of Dentistry, 4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan

2Institute of Life Sciences, Ajinomoto Co., Inc., 1–1 Suzuki-cho, Kawasaki-ku, Kawasaki 210-8681, Japan

*Corresponding Author:
Takashi Sasano
Division of Oral Diagnosis
Department of Oral Medicine and Surgery
Tohoku University Graduate School of Dentistry
4-1 Seiryo-machi, Aoba-ku, Sendai 980-8575, Japan
Tel: +81-22-717-8390
Fax: +81-22-717-8393
E-mail: [email protected]

Received date: May 03, 2012; Accepted date: June 21, 2012; Published date: June 26, 2012

Citation: Sasano T, Satoh-Kuriwada S, Kaneta N, Shoji N, Kawai M, et al. (2012) Incidence of Taste Disorder and Umami Taste Disorder among the Japanese Elderly and Youth. J Nutr Food Sci S10:002. doi: 10.4172/2155-9600.S10-002

Copyright: © 2012 Sasano T, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

Abstract

The incidence of taste disorder has increased among both the elderly and the young in Japan. The loss of taste sensation not only affects the quality of life, but can also cause weight loss and health problems, particularly among the elderly. Taste disorder among the elderly has been attributed to side effects of medication, malnutrition (including zinc deficiency), systemic diseases, and oral diseases. We found that salivation was significantly decreased in elderly patients with taste disorder, but was normal in all elderly subjects with normal taste perception thresholds. This suggests that hyposalivation is closely related to taste disorder among the elderly. However, the cause of taste disorder among the young is unclear. In addition, we found that some elderly patients complained of loss of only umami taste sensation, whereas the other four basic taste sensations (sweet, salty, sour, bitter) were normal. Patients with loss of umami taste sensation were all over 65 years old, and they all complained of appetite and weight loss, resulting in poor general health.
 
In this article, we surveyed the prevalence of taste disorder in Japan and discussed the causes of taste disorder.

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