decrease with age vs decrease by age

Both phrases are correct, but they have slightly different meanings. 'Decrease with age' implies that something decreases as age increases, while 'decrease by age' suggests that age is the cause of the decrease. The choice between them depends on the intended meaning.

Last updated: March 20, 2024 • 701 views

decrease with age

This phrase is correct and commonly used in English.

This phrase is used to indicate that something decreases as age increases. It implies a correlation between age and the decrease.

Examples:

Memory tends to decrease with age.
Flexibility in joints may decrease with age.
The ability to learn new things can decrease with age.

Show examples from the web [+]

Brain levels of vitamin B12 decrease with age and are prematurely low in people with autism and schizophrenia. Date: January 22, 2016; Source: Nova ...
However, cross-sectional and prospective studies of participants ≥65 years of age have reported that total and LDL cholesterol levels decrease with age.
Does Taste Decrease with Age? by Fred Cicetti | October 07, 2009 05:27am ET. Submit. Reddit. Credit: dreamstime. Credit: dreamstime. View full size image ...
Jan 22, 2016 ... Researchers Find Brain Levels of Vitamin B12 Decrease with Age and Are Prematurely Low in People with Autism and Schizophrenia.

Alternatives:

decline with age
diminish with age
reduce with age
decrease as one gets older
decrease over time

decrease by age

This phrase is correct but less commonly used in English.

This phrase can be used to indicate that age is the cause of the decrease. It suggests a direct relationship between age and the decrease.

Examples:

The risk of certain diseases may decrease by age.
The quality of the product may decrease by age.
The number of friends one has may decrease by age.

Show examples from the web [+]

Biochem Biophys Res Commun. 2003 Nov 28;311(4):1008-13. Osteoblast recruitment from stem cells does not decrease by age at late adulthood. Leskelä ...
Osteoblast recruitment from stem cells does not decrease by age at late adulthood. Hannu-Ville Leskelä,, , ,; Juha Risteli,,; Salla Niskanen,; Jussi Koivunen, ...
Jul 31, 2014 ... 2Decrease by age is statistically significant (p < 0.05) based on a weighted least- squares regression test. NOTE: Data are based on a sample ...
View ArticlePubMed; Leskela H-V, Risteli J, Niskanen S, Koivunen J, Ivaska KK, Lehenkari P: Osteoblast recruitment from stem cells does not decrease by age ...

Alternatives:

decrease due to age
decrease as a result of age
decrease because of age
decrease with increasing age
decrease as one ages

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decrease with age vs decrease by age