Geriatrics

Download Aging is a group-selected adaptation: theory, evidence, and by Joshua Mitteldorf PDF

By Joshua Mitteldorf

Because the Nineteen Nineties, laboratory characterization of getting older has been diverging from predictions of evolutionary conception, in particular within the region of genetics. at the same time, a technological know-how of multilevel choice has discovered its position within the evolutionary literature. the writer means that facts warrants attention of a brand new paradigm for evolution of getting older, and proposes the demographic concept of senescence, wherein getting older has Read more...

summary: because the Nineties, laboratory characterization of getting older has been diverging from predictions of evolutionary concept, specifically within the region of genetics. at the same time, a technological know-how of multilevel choice has came across its position within the evolutionary literature. the writer means that facts warrants attention of a brand new paradigm for evolution of getting older, and proposes the demographic thought of senescence, wherein getting older has been affirmatively chosen since it degrees the loss of life expense over the years, assisting to stabilize inhabitants dynamics and forestall extinctions

Show description

Read or Download Aging is a group-selected adaptation: theory, evidence, and medical implications PDF

Best geriatrics books

Atlas of Skin Cancers: Practical Guide to Diagnosis and Treatment

The occurrence of dermis melanoma has risen quickly in fresh a long time, and sufferers frequently current at the beginning to practitioners in lots of assorted specialties. simply because epidermis melanoma can range in medical visual appeal, even dermatologists might adventure trouble in attaining a medical prognosis. For basic care physicians and health care provider extenders (physician assistants, nurses, and nurse practitioners), who've had little or no or no formal education in dermatology, the duty may be nonetheless extra daunting.

Infectious Causes of Cancer: Targets for Intervention (Infectious Disease)

James J. Goedert and a crew of major experimental and medical researchers offer severe, integrating surveys of these viruses, micro organism, and parasites which are referred to now to play an incredible position in cancer-work that opens the best way towards novel healing pursuits. The members specialize in 5 forms of human carcinogenic infection-herpesviruses, retroviruses, papillomaviruses, hepatitis viruses, and H.

Dementia Care: A Practical Manual

Dementia could be a distressing situation, for the patient, and for households and different carers. administration of dementia is rarely effortless, and contains dealing with a few disagreeable difficulties and tough offerings. the suitable method and services can minimise the unpleasantness and make dementia achievable, whereas green or inexpert administration has the aptitude to reason pointless misery and incapacity, mis-directed assets, annoyed care employees, unduly lengthy classes spent in clinic and untimely care domestic placement.

Designing technology training for older adults in continuing care retirement communities

This booklet presents the most recent learn and design-based options for a way to layout and enforce a know-how education application for older adults in carrying on with Care Retirement groups (CCRCs). The strategy within the booklet concentrates on offering valuable top practices for CCRC vendors, CEOs, task administrators, in addition to practitioners and method designers operating with older adults to reinforce their caliber of existence.

Extra resources for Aging is a group-selected adaptation: theory, evidence, and medical implications

Example text

12 Aging is a Group-Selected Adaptation Can Life Extension from CR be Reconciled with Accepted Evolutionary Theories? There are ideas in the literature that would purport to explain CR within the context of traditional evolutionary theory, but none has been fully explored or set forth in detail. Harrison and Archer [5] were the first out of the starting gate, with a theory that extension of lifespan was an artifact of the breeding of laboratory rodents. ) They focus appropriately on the huge advantage available to an animal that can survive through a famine and reproduce in the period of thin competition that follows.

But it poses particular difficulty for theories of aging from oxidative damage, since exercise increases oxidative stress and increases lifespan. Exercise is most demanding on mitochondria. It induces mitochondrial oxidative damage and promotes mitochondrial autophagy. According 16 Aging is a Group-Selected Adaptation to the popular mitochondrial free radical theory [75], exercise ought to accelerate aging and antioxidants should offer some mitigation, but the truth is the opposite. It has been common knowledge for at least many decades that exercise benefits almost every aspect of health and lowers mortality, especially for diseases of old age.

Theory proclaims that there is no such thing as genetically programmed death; it is an evolutionary oxymoron. But in the case of semelparity, some of the most orthodox evolutionary theorists will admit an exception [8]. Pansies and other annuals familiar from domestic gardens will flower once for the year, then the buds “go to seed” and the plant dies. Does death result from the effort of making the flower? No! In fact, snipping off the flower gives the plant a new lease on life. Pansies can be made to bloom continuously through the summer, 26 Aging is a Group-Selected Adaptation if their flowers are snipped before they go to seed.

Download PDF sample

Rated 4.38 of 5 – based on 48 votes