The phrase "a vast effect on" is correct and usable in written English.
It can be used when discussing the significant impact or influence something has on another thing or situation.
Example: "The new policy had a vast effect on employee morale and productivity."
Alternatives: "a significant impact on" or "a considerable influence on".
That wave helps to explain how a tiny amount of a hormone, say, can have a vast effect on normal functions throughout the body.
Negotiating an issue that has such a vast effect on our world is not easy, and governments know that negotiations are as much about how countries interact as they are about what they agree.
Most of them are products of glaciation, which has had a vast effect on the continental drainage pattern notably by widening the passes through the northern Appalachians and the Cordilleras and by forming big lakes in ice-deepened basins.
Access control mechanism has a vast effect on interference level in femtocell network.
The culture microenvironment has a vast effect on cellular morphology and function.
Since only a fraction of patients respond to such therapy, a priori identification of responders could have a vast effect on survival.
Because of the quick development and widespread use of mobile phones, and their vast effect on communication and interactions, it is important to study possible negative health effects of mobile phone exposure.
Because of the quick development and widespread use of mobile phones, and their vast effect on communication and interactions in work and private life, it is important to study possible negative health effects of the exposure.
Further research is needed to assess which injury prevention efforts may yield the greatest benefit in reducing rates of traumatic injury and mortality, as even small effects at the neighborhood level may have vast effects on the targeted population as a whole.
And these purchases have vast effects on the economy because … well, I share Karl Smith's bemusement.
Indeed, parameters like temperature, pH, O2, metal ion concentration, carbohydrate availability, salt, reactive oxygen species and antibacterial molecules have vast effects on GAS protein expression [3], [4], [5], [6], [7].
