Linked from

The 38 pages that link to Melatonin, each with the reason it gives.

• NocturnalityRelated: Its release often rises in darkness, coordinating night-associated physiology.

• PhotoperiodismRelated: Its duration can convey information about night length in animals.

• SerotoninCompared with: Its role in sleep is distinct from serotonin’s broader signaling functions.

• Light pollutionRelated: Exposure to light at night can suppress melatonin production and alter sleep timing.

• InsomniaRelated: Its effects depend on timing and circadian context, so it is not a universal insomnia remedy.

• CaffeineCompared with: Its sleep-timing effects contrast with caffeine’s tendency to delay sleep.

• Seasonal affective disorderRelated: Daylight duration influences melatonin timing, one proposed link between season and mood.

• Sleep hygieneRelated: Evening light can suppress its release and shift the timing of sleep.

• Midnight sunRelated: Bright nights can suppress its evening rise and make sleep timing more difficult.

• Suprachiasmatic nucleusRelated: Nuclear timing controls the daily pattern of signals that regulate pineal melatonin secretion.

• TryptophanRelated: The pineal gland converts serotonin, derived from tryptophan, into melatonin.

• Cognitive behavioral therapy for insomniaCompared with: It is not a substitute for CBT-I’s broader approach to persistent insomnia.

• Jet lagRelated: Its release can remain aligned with the departure time while local nights have shifted.

• IndoleRelated: Its indole-containing structure links this scaffold to biological rhythms.

• Shift workRelated: Nighttime light can suppress melatonin while workers are expected to remain alert.

• Sleep-wake cycleRelated: Its evening rise conveys nighttime conditions to circadian-regulated processes.

• ChronotypeRelated: Its evening onset is a measurable marker of circadian timing differences.

• Diurnal animalRelated: Its daily pattern helps regulate sleep and activity timing.

• DiphenhydramineCompared with: It acts through circadian signaling rather than histamine blockade and is a different approach to sleep problems.

• EntrainmentRelated: Its timing is shaped by the light-entrained circadian system.

• Dark-sky preservationRelated: Exposure to light at night can suppress its normal nighttime production.

• HypnoticRelated: Melatonin products are used to shift sleep timing, though their effects differ from sedative hypnotics.

• Pineal glandRelated: The pineal gland’s principal hormone carries its timing signal to tissues throughout the body.

• LightRelated: Light exposure suppresses nocturnal melatonin secretion in humans.

• NightRelated: Its secretion typically rises in dim light, linking darkness with sleep readiness.

• RamelteonCompared with: It shares ramelteon's receptor targets but is the body's endogenous signaling molecule.

• Julius AxelrodBroader topic: Axelrod discovered an enzyme involved in its synthesis, linking his work to biological timing.

• TemazepamCompared with: Its role in sleep timing differs from temazepam's direct sedative action.

• Sleep disorderRelated: Its timing can be disrupted in circadian sleep disorders and influenced by treatment.

• TryptamineBroader topic: Its synthesis proceeds through serotonin, linking melatonin to the tryptamine scaffold.

• Dark retreatRelated: Darkness changes a major environmental signal involved in melatonin regulation.

• NitrazepamCompared with: Melatonin targets sleep timing rather than enhancing GABA-mediated sedation.

• Smith–Magenis syndromeRelated: Its secretion pattern is often shifted in Smith–Magenis syndrome, including daytime elevation.

• AgomelatineCompared with: Agomelatine mimics melatonin at MT1 and MT2 receptors but also blocks 5-HT2C receptors.

• FlunitrazepamCompared with: It represents a non-sedative alternative for some sleep-timing problems.

• Harderian glandRelated: Melatonin and related indoles occur in the Harderian gland of some mammals.

• Sleep in animalsRelated: Its daily secretion links darkness to shifts in sleep timing.

• SomnologyRelated: Its nightly secretion links circadian timing with sleep regulation.