Abstract: In general, cancer incidence increases with age. However some cancers, such as breast cancer, become indolent in the aged women due to both the "seed" (well differentiated cancer cell) and "soil" (reduced production of estrogen - growth factor for breast cancer cells) effects. Prevention and treatment of cancer in an aged population are discussed. ... Read more

Abstract: A higher metabolic rate and elevated oxidative stress levels have been thought of as the primary factors in the aging process. Authors described a new hypothesis for determining longevity - the metabolic stability theory, which states that the extent of the fluctuation in the metabolic rate and how quickly a species returns to the "normal" metabolic rate after extraordinary events affects the organism's longevity the most. ... Read more