skin aging is a continuous process that exhibits fine and deep wrinkles, thin and transparent skin, loss of underlying fat, dry skin and itch, following decreased collagen and elastin  synthesis. both extrinsic and intrinsic agents are considered in the pathogenesis on skin aging. extrinsic factors such as sun exposure, windy and dry weather, nutrition, and lifestyle may induce premature aging,...

female fertility begins to decline many years prior to the onset of menopause despite continued regular ovulatory cycles. age related infertility is due to oocyte abnormalities and decreased ovarian reserve. treatment of infertility when the cause is limited to decreased ovarian reserve is empirical at present except for oocyte donation. this mini review of the literature covers all available e...

background aging is an irreversible natural process characterized by a decline in both the physical and mental status of individuals. because of multiple factors, this process and its consequences vary greatly between individuals. a successful aging (sa) is the target of current health policies and well-being of individuals. knowing the factors that contribute to sa and its barriers would trans...

collection of multiple processes that increase the chronological age of an organism leading to death is defined as aging, and even though important, it is poorly understood. recent research has shown that aging is due to biochemical and genetic changes, in interaction with environmental effects, including diet and nutrition. most knowledge on aging is based on ge­netic model system, but its mol...

background: lower limbs antigravity muscles weakness and decreased functional ability have significant role in falling. the aim of this study was to find the effects of aging on muscle strength and functional ability, determining the range of decreasing strength and functional ability and relationship between them in healthy women. methods: across-section study was performed on 101 healthy wome...

background chronological aging is associated with a decrease in physical activity levels and consequently a decline in physical fitness, which may contribute to adverse conditions such as cardiovascular disease, hypertension, obesity and physical impairment. objectives this study sought to examine the effects of an 8-week physical activity intervention program on nutritional status and health-r...

objectives: the main purpose of this study was to determine the interactive role of physical activity and personality traits inpsychosocial development of elders. methods & materials: this research was a casual comparative with 300 elders (150 active and 150 non-actives) with 60-85 years old from tehran selected as statistical sample on available bases. all subjects completed psychosocial devel...

age related cytochemical changes of thymic endocrine cells were studied in 78 day old chicks at five day interval to age of day 60 employing a panel of cytochemical stains. methenamine silver revealed cell morphology including cell processes distinctly while diamine silver revealed a stronger argentaffinity in these cells. the cells had greater affinity for diamine silver compared to methenamin...

the effects of zinc oxide (zno) and e. coli-derived 6-phytase supplemented-diet on the reproductive performance in aged broiler breeder hens and on immune responses of their progeny chicks were studied. in a 2×4 factorial arrangement, 2 inclusion levels (0 or 300 u kg-1 diet) of e. coli-derived phytase and 4 inclusion levels (30, 60, 90, and 120 mg kg-1 diet) of zno were provided from 62 throug...

introduction: elderly patients suffer disproportionally from a number of chronically painful conditions, with arthritis leading the list. osteoarthritis (oa) is the most common joint disorder and the most prevalent cause of joint pain across the spectrum of middle age to elderly. enhancing behavioral intention toward self-care for oa, previously known as proximal predictor of self-care, is one ...