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Related Concept Videos

Regression Toward the Mean01:52

Regression Toward the Mean

Regression toward the mean (“RTM”) is a phenomenon in which extremely high or low values—for example, and individual’s blood pressure at a particular moment—appear closer to a group’s average upon remeasuring. Although this statistical peculiarity is the result of random error and chance, it has been problematic across various medical, scientific, financial and psychological applications. In particular, RTM, if not taken into account, can interfere when researchers try to extrapolate results...
Self-Discrepancy Theory02:45

Self-Discrepancy Theory

One influential perspective on what motivates people's behavior is detailed in Tory Higgin's self-discrepancy theory (Higgins, 1987). He proposed that people hold disagreeing internal representations of themselves that lead to different emotional states.
Spare Receptors01:30

Spare Receptors

Some receptors remain unoccupied even when an agonist produces a maximal response. Such empty ones are called spare receptors. In presence of spare receptors the maximum effect of an agonist drug is achieved with fewer than 100% of the receptors being occupied. To determine the presence of spare receptors, scientists often compare the concentration of the drug needed to produce 50% of the maximum effect (EC50) with the concentration of the drug needed to occupy 50% of the receptors (Kd). If the...
Reducing Line Loss01:18

Reducing Line Loss

In a three-phase circuit, line loss is an indicator of energy dissipated as heat due to the resistance of transmission lines. To address this, incorporating transformers into the system—a step-up transformer at the source and a step-down transformer at the load—is a strategic solution. Two three-phase transformers are introduced to improve this.
With a step-up transformer at the source, the voltage is increased, thereby reducing the current in the transmission lines since power loss in...
Downsampling01:20

Downsampling

When considering a sampled sequence with zero values between sampling instants, one can replace it by taking every N-th value of the sequence. At these integer multiples of N, the original and sampled sequences coincide. This process, known as decimation, involves extracting every N-th sample from a sequence, thereby creating a more efficient sequence.
The Fourier transform of the decimated sequence reveals a combination of scaled and shifted versions of the original spectrum. This...
Decreasing Function01:27

Decreasing Function

A decreasing function describes a relationship where the output consistently declines as the input increases. This means that for any two input values, if one is greater than the other, the corresponding output is smaller. Mathematically, a function f is decreasing on an interval I if for every x1 < x2​ in I, f (x1) > f (x2). This type of behavior is visually identified on a graph that slopes downward from left to right.The nature of a function can be analyzed by calculating its rate of...

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Related Experiment Video

Updated: Jun 5, 2026

High Throughput Single-cell and Multiple-cell Micro-encapsulation
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Published on: June 15, 2012

Less is better.

Thomas T Samaras, Harold Elrick

    Journal of the National Medical Association
    |February 21, 2002
    PubMed
    Summary

    The "more is better" approach harms health and the environment. Reducing caloric intake and average human size can improve longevity and sustainability.

    Area of Science:

    • Human Health and Environmental Science
    • Population Dynamics

    Background:

    • The prevailing "more is better" philosophy is examined for its detrimental effects on human health, environmental sustainability, and long-term human survival.
    • Increasing average human height and body weight in developed nations are linked to negative health outcomes and reduced longevity.

    Discussion:

    • Reduced caloric intake is associated with significant health benefits, including lower rates of heart disease, as observed in populations with lower food consumption.
    • Higher birth weights and rapid childhood growth are linked to increased risks of cancer and adult obesity.
    • Accelerated physical maturity may impede cognitive development and the acquisition of knowledge necessary for navigating a complex world.

    Key Insights:

    • Societies with lower average food intake exhibit lower incidences of heart disease, with examples like rural South Africans demonstrating increased longevity and a higher proportion of centenarians.

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  • The trend of increasing human size exacerbates population pressures, intensifying demands on finite resources such as water, energy, and a clean environment.

    • Outlook:

    • Re-evaluating the pursuit of larger body size is crucial for mitigating health risks and environmental strain.
    • Promoting sustainable lifestyles and potentially smaller average human size could enhance global health and ensure long-term species survival.