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Related Concept Videos

Wood Fasteners01:18

Wood Fasteners

In wood construction, fasteners are essential for securing components together, with the connection strength largely dependent on the direct bearing between members. Various types of fasteners are employed, each suited to specific applications and structural requirements.
Nails are the most common fasteners, consisting of sharp-pointed metal pins that are driven into wood using a hammer or a mechanical nail gun. They come in a variety of diameters, heads, and lengths. Nailing techniques include...
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Optimal Foraging

How animals obtain and eat their food is called foraging behavior. Foraging can include searching for plants and hunting for prey and depends on the species and environment.
Norton's Theorem01:14

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Norton's theorem is a fundamental principle stating that a linear two-terminal circuit can be substituted with an equivalent circuit, which comprises a current source (ⅠN) in parallel with a resistor (RN). Here, ⅠN represents the short-circuit current flowing through the terminals, and RN stands for the input or equivalent resistance at the terminals when all independent sources are deactivated. This implies that the circuit illustrated in Figure (a) can be exchanged with the one depicted in...
Naturalistic Observations02:30

Naturalistic Observations

If you want to understand how behavior occurs, one of the best ways to gain information is to simply observe the behavior in its natural context. However, people might change their behavior in unexpected ways if they know they are being observed. How do researchers obtain accurate information when people tend to hide their natural behavior? As an example, imagine that your professor asks everyone in your class to raise their hand if they always wash their hands after using the restroom. Chances...
Key Elements for Plant Nutrition02:35

Key Elements for Plant Nutrition

Like all living organisms, plants require organic and inorganic nutrients to survive, reproduce, grow and maintain homeostasis. To identify nutrients that are essential for plant functioning, researchers have leveraged a technique called hydroponics. In hydroponic culture systems, plants are grown—without soil—in water-based solutions containing nutrients. At least 17 nutrients have been identified as essential elements required by plants. Plants acquire these elements from the atmosphere, the...
Confirmation Biases01:31

Confirmation Biases

The confirmation bias is the tendency to focus on information that confirms our existing beliefs and ignore information that is inconsistent with our expectations. For example, if you think that your professor is not very nice, you notice all of the instances of rude behavior exhibited by the professor while ignoring the countless pleasant interactions he is involved in on a daily basis. Have you ever fallen prey to the confirmation bias, either as the source or target of such bias?

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Related Experiment Video

Updated: May 9, 2026

Non-destructive SPE-UPLC-based Quantification of Aflatoxins and Stilbenoid Phytoalexins in Single Peanut (Arachis spp.) Seeds
10:24

Non-destructive SPE-UPLC-based Quantification of Aflatoxins and Stilbenoid Phytoalexins in Single Peanut (Arachis spp.) Seeds

Published on: April 19, 2024

Should we go nuts about nuts?

Sabine Rohrmann1, David Faeh

  • 1Institute of Social and Preventive Medicine, University of Zurich, Hirschengraben 84, 8001, Zurich, Switzerland. sabine.rohrmann@ifspm.uzh.ch

BMC Medicine
|July 20, 2013
PubMed
Summary

Regular nut consumption significantly reduces the risk of premature death from cardiovascular disease and cancer. This benefit was specifically observed in individuals who increased their nut intake during the study period.

Area of Science:

  • Nutritional Science
  • Cardiovascular Health
  • Oncology

Background:

  • Growing evidence since the 1990s suggests health benefits associated with nut consumption.
  • Previous studies indicated a correlation between nut intake and reduced mortality, but lacked specific intervention data.

Purpose of the Study:

  • To analyze the impact of increased nut consumption on cardiovascular disease and cancer mortality within the PREDIMED trial.
  • To determine if the protective effect on premature mortality is linked to increased nut intake specifically.

Main Methods:

  • Analysis of data from the Spanish PREDIMED trial, a randomized controlled trial.
  • Comparison of mortality rates between intervention groups (increased nuts, nuts plus olive oil) and a control group over 4.8 years.

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Last Updated: May 9, 2026

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Main Results:

  • Individuals consuming nuts more than three times weekly showed lower mortality from cardiovascular disease and cancer.
  • A significant reduction in premature mortality was observed exclusively in the group that increased nut consumption.
  • Nut consumption decreased in the additional olive oil and control groups during follow-up.

Conclusions:

  • Increased nut consumption demonstrates a protective effect against premature mortality, particularly from cardiovascular disease and cancer.
  • The observed health benefits are linked to the act of increasing nut intake, not merely participation in a health intervention.
  • Further research is needed to establish optimal nut quantities, mechanisms, and preferred nut types for health benefits.