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is known to affect vs has been known to affect

Both phrases are correct, but they are used in slightly different contexts. "Is known to affect" is used to state a general fact or truth, while "has been known to affect" is used to indicate a specific past action or event.

Last updated: March 29, 2024 • 934 views

is known to affect

This phrase is correct and commonly used in English to state a general fact or truth.

This phrase is used to indicate that something is recognized or acknowledged to have an effect on something else.

Examples:

  • Smoking is known to affect your health.
  • Lack of sleep is known to affect cognitive function.
  • Excessive sugar consumption is known to affect your weight.
  • Climate change is known to affect global weather patterns.
  • Stress is known to affect mental health.
  • Glycosylation of other proteins is known to affect their stability, activity, biodistribution, and half-life in blood.
  • Now, massive disturbance at this scale is known to affect hydrological cycles, degrade wildlife habitat, and emit greenhouse gases back into the atmosphere, which creates more disturbance and more tree diebacks.
  • Some bedding materials may contain naturally occurring oestrogenic or antioestrogenic chemicals (e.g. corn cob is known to affects the cyclicity of rats and appears to be antioestrogenic).
  • The disease is known mainly to affect sub-Saharan Africa and is associated with extreme poverty.
  • OSSEOR is not known to affect your ability to drive or use machines.
  • HCV genotype and baseline virus load are prognostic factors which are known to affect response rates.
  • HCV genotype and baseline virus load are prognostic factors which are known to affect response rates.
  • - If you are taking medicine known to affect the liver.
  • There are lots of different proteins that are known to affect aging.
  • It's been known to affect the limbic system.
  • It's known to affect the neurotransmitters in animals' brains.
  • Patients taking medicinal products known to affect blood pressure or cardiac function should be closely monitored during treatment with clofarabine (see sections 4.4 and 4.8).
  • HCV genotype and baseline virus load are prognostic factors which are known to affect response rates.
  • I mean, a virus in the myelin sheath has been known to affect the forebrain and cause group hallucinations.
  • There are some viral strains of the psittacosis- lymphogranuloma venereum group that have been known to affect bone.
  • I mean, a virus in the myelin sheath has been known to affect the forebrain and cause group hallucinations.
  • ori factors which are known to affect response rates.
  • HCV genotype and baseline virus load are prognostic factors which are known to affect response rates.
  • factors which are known to affect response rates.
  • factors which are known to affect response rates.

Alternatives:

  • is understood to affect
  • is recognized to affect
  • is acknowledged to affect
  • is believed to affect
  • is proven to affect

has been known to affect

This phrase is correct and commonly used in English to indicate a specific past action or event.

This phrase is used to indicate that something was recognized or acknowledged to have had an effect on something else in the past.

Examples:

  • The new medication has been known to affect patients differently.
  • The chemical spill has been known to affect the local wildlife.
  • Her leadership style has been known to affect team morale.
  • The economic downturn has been known to affect consumer spending.
  • The policy change has been known to affect company profits.
  • I mean, a virus in the myelin sheath has been known to affect the forebrain and cause group hallucinations.
  • I mean, a virus in the myelin sheath has been known to affect the forebrain and cause group hallucinations.
  • As VFEND has been known to affect the liver and the kidney, your doctor should monitor the function of your liver and kidney by doing blood tests.
  • As VFEND has been known to affect the liver and the kidney, your doctor should monitor the function of your liver and kidney by doing blood tests.
  • For instance, in the UK, swayback is a disease which has long been known to affect sheep, and the link between this disease and copper deficiency has been demonstrated in several countries.
  • It's been known to affect the limbic system.
  • There are some viral strains of the psittacosis- lymphogranuloma venereum group that have been known to affect bone.
  • HCV genotype and baseline virus load are prognostic factors which are known to affect response rates.
  • HCV genotype and baseline virus load are prognostic factors which are known to affect response rates.
  • - If you are taking medicine known to affect the liver.
  • There are lots of different proteins that are known to affect aging.
  • It's known to affect the neurotransmitters in animals' brains.
  • Patients taking medicinal products known to affect blood pressure or cardiac function should be closely monitored during treatment with clofarabine (see sections 4.4 and 4.8).
  • HCV genotype and baseline virus load are prognostic factors which are known to affect response rates.
  • ori factors which are known to affect response rates.
  • HCV genotype and baseline virus load are prognostic factors which are known to affect response rates.
  • factors which are known to affect response rates.
  • factors which are known to affect response rates.
  • Sibutramine should, therefore, be used with caution in patients predisposed to bleeding events and those taking concomitant medications known to affect haemostasis or platelet function.
  • Glycosylation of other proteins is known to affect their stability, activity, biodistribution, and half-life in blood.

Alternatives:

  • has been understood to affect
  • has been recognized to affect
  • has been acknowledged to affect
  • has been believed to affect
  • has been proven to affect

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