Weight reduction significantly increases circulating levels.

It also increased circulating insulin-like growth factor (IGF-1).

Caffeine mobilizes free fatty acids from fat and/or intramuscular triglycerides by increasing circulating epinephrine levels.

Increased serum lipids also cause hypercarotenemia because there are increased circulating lipoproteins that contain bound carotenoids.

Tribulis terrestris is said to increase circulating testosterone levels.

Homozygous mutant animals had an absence of corpus callosum and increased circulating alkaline phosphatase levels.

Therefore, increased circulating lipids will increase uptake and thereby fatty acid oxidation.

Males additionally displayed decreased circulating glucose and increased circulating bilirubin levels.

Variants of PCSK9 can reduce or increase circulating cholesterol.

Female homozygotes had a decreased respiratory quotient, increased circulating alkaline phosphatase level and increased leukocyte cell number.