Cancer Risk Factors
Cancer Risk Factors - Related Videos
01:26
Factors Affecting the Risk of Infection
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2023
The hosts' susceptibility to infection depends on several factors. The integrity of the skin and mucous membranes helps protect the body against microbial attacks. When the skin is altered, the chance of infection, limb loss, and even death increases. The integrity and count of the white blood cells help the body resist pathogens and fight infection. When impaired, it reduces the body's resistance to pathogens. The acidic pH levels of the gastrointestinal, genitourinary tracts, and skin create...
09:36
Changes in Mammary Gland Morphology and Breast Cancer Risk in Rats
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Cited by 61 •
2010
Our protocol describes how to dissect the rat abdominal mammary gland and how to prepare mammary gland whole mounts. It also describes how to analyze mammary gland morphology using three end-points (number of terminal end buds, epithelial elongation and differentiation) and to use these results to predict mammary cancer risk in rats which were exposed to dietary modifications in utero or during prepuberty.
01:24
Drug Toxicity: Risk factors
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2026
Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
05:19
A New Technique for Treating Low-risk Prostate Cancer—Super Active Surveillance
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2025
Overtreatment is often administered to patients with low-risk prostate cancer; super-active surveillance can help avoid such overtreatment.
06:36
A Modified In vitro Invasion Assay to Determine the Potential Role of Hormones, Cytokines and/or Growth Factors in Mediating Cancer Cell Invasion
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Cited by 3 •
2015
This video article describes a modified in vitro method to examine the role of hormones, cytokines and/or growth factors in driving cancer cell invasion.
FAQs
Risk estimates can shift substantially with both the amount of exposure and the length of time it occurs. Repeated or prolonged contact with a factor may create more opportunities for DNA damage, altered gene regulation, chronic inflammation, or impaired growth control. Researchers therefore consider exposure intensity and duration rather than treating every contact as equivalent when evaluating cancer probability.
Cancer risk factors can influence several safeguards that normally keep cells stable. Some damage DNA directly, while others alter gene regulation, sustain chronic inflammation, or weaken systems responsible for controlling cell growth and repairing cellular damage. These mechanisms help explain why environmental exposures, behaviors, infections, inherited traits, and biological conditions can affect cancer likelihood through different pathways.
The effect of a risk factor depends partly on genetic background and on the presence of other exposures or conditions. Two people may experience different levels of risk even when they encounter a similar factor because dose, duration, inherited susceptibility, and combined exposures are not identical. This variability makes risk estimates probabilistic rather than certain predictions for individuals.
Inherited traits can influence a person's biological susceptibility before any particular exposure occurs, whereas age represents a condition associated with changing cancer probability across the lifespan. Neither factor guarantees disease. Their importance must be interpreted alongside environmental exposures, behaviors, biological conditions, and the cellular systems that regulate growth and repair.
Researchers examine patterns linking inherited traits, environmental exposures, behaviors, infections, age, obesity, and other conditions with cancer occurrence. These relationships help identify groups with elevated probability and reveal how risk varies across populations. The resulting information supports population-health planning and helps direct prevention efforts toward factors or groups where risk reduction may be most relevant.
Risk-factor information helps guide decisions about reducing harmful exposures, addressing relevant behaviors or conditions, and considering screening or other risk-reduction strategies. Because a factor raises probability rather than ensuring cancer, decisions should account for the person's overall combination of risks, including dose, duration, genetics, and coexisting exposures rather than relying on one factor alone.
Comparing risk factors across populations can help researchers estimate where cancer is more likely to occur and identify patterns associated with specific exposures or biological conditions. This evidence connects cellular mechanisms with population-level outcomes, supporting cancer prevention and public-health planning. It also clarifies why changing exposure patterns may influence disease burden without making individual outcomes completely predictable.