In the eyelids, meibomian glands, also called tarsal glands, are a type of sebaceous gland that secrete a special type of sebum into tears. Fordyce spots are ectopic (misplaced) sebaceous glands found usually on the lips, gums and inner cheeks.ebaceous glands secrete the oily, waxy substance called sebum (Latin: fat, tallow) that is made of triglycerides, wax esters, squalene, and metabolites of fat-producing cells. Sebum waterproofs and lubricates the skin and hair of mammals.
Sugar Withdrawal Symptoms and Duration: What you can Expect. Sugar withdrawal symptoms vary and sugar withdrawal duration usually lasts between two and four weeks for most people. Tiredness, depression, flu symptoms, and irritability are common problems when you first give up eating sugar. Sugar does release opioids and dopamine, so some scientists believe it can be addictive.
Caffeine Withdrawal Symptoms: Top Fifteen. Caffeine Addiction. Caffeine withdrawal is no laughing matter and can be very debilitating for those who are suddenly without caffeine. If you are or have been an avid coffee or energy drink consumer then you are aware of how addictive caffeinated beverages can be.