FOR MEN ON TRT · THE RESEARCH

4 numbers every man on TRT should know about mood, sleep and stress

TRT fixes your levels. These are the things it can't fix — and the ingredients researchers have studied for each.

2.6%mood swings on the label

−1 hrof sleep on high-dose T

2 nightsof short sleep to raise anger

−15%daytime T after a bad week

Mood swings are printed on the label

THE NUMBERS

2.6%ON TESTOSTERONE

0%ON PLACEBO

Men on a testosterone gel reported emotional lability — mood swings, impatience, anger and aggression — in a 6-month clinical trial.

FDA PRESCRIBING INFORMATION · TESTOSTERONE GEL 1.62%

WHAT RESEARCH SAYS ABOUT L-THEANINE

Lower stress scores in 4 weeks

In a randomized, placebo-controlled trial, healthy adults taking 200 mg of L-Theanine a day saw their stress-related symptom scores, including anxiety ratings, drop over four weeks.

HIDESE ET AL., NUTRIENTS, 2019

L-Theanine is in Delta Black

High-dose T can cost you an hour of sleep

THE NUMBERS −1 hr

Men over 60 given high-dose testosterone slept about an hour less a night, with more breathing disruptions overnight.

Snoring or breathing problems at night are a conversation for your doctor.

LIU ET AL., J CLIN ENDOCRINOL METAB, 2003

WHAT RESEARCH SAYS ABOUT MAGNESIUM

Faster to sleep. Better sleep efficiency.

Time to fall asleep

Sleep efficiency

Cortisol

In an 8-week randomized, placebo-controlled trial in older adults with poor sleep, magnesium shortened the time it took to fall asleep, improved sleep efficiency and lowered cortisol, the body's main stress hormone.

ABBASI ET AL., J RES MED SCI, 2012

Magnesium Bisglycinate is in Delta Black

Two short nights. One short fuse.

THE NUMBERS

4.5 hrs × 2 NIGHTS

That's all it took for people in a sleep study to get measurably angrier, and worse at shaking off everyday frustration, than those who slept normally.

KRIZAN & HISLER, J EXP PSYCHOL GEN, 2019

THE TAKEAWAY Protect the sleep, protect the temper

Magnesium

L-Theanine

GABA

L-Tryptophan

Chamomile

Each of these ingredients has been studied for relaxation and sleep. Together, they're the reason Delta Black exists.

All five are in Delta Black

First month free Delta Brain + Delta Black. Just pay shipping.

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A bad week of sleep drags testosterone down

THE NUMBERS −10–15%

Normal sleep

1 week of 5-hour nights

Healthy young men who slept five hours a night for one week saw daytime testosterone fall 10–15%.

LEPROULT & VAN CAUTER, JAMA, 2011

HOW L-TRYPTOPHAN WORKS The raw material for your sleep signal

L-Tryptophan

Serotonin

Melatonin

Your body converts L-Tryptophan, an essential amino acid, into serotonin and then melatonin, the hormone that tells your body it's time to sleep.

L-Tryptophan is in Delta Black

Stress fogs your head. The Army tested a fix.

Soldier on a mountain ridge beside an American flag

THE NUMBERS

86 min OF COLD STRESS

Long enough for "clear thinking" ratings to drop in the placebo group of a U.S. Army stress study.

U.S. ARMY RESEARCH INSTITUTE OF ENVIRONMENTAL MEDICINE, 1996

WHAT RESEARCH SAYS ABOUT L-TYROSINE Clear thinking held steady

PLACEBO

Dropped

L-TYROSINE

Held steady

Military researchers have studied L-Tyrosine for decades because it's the raw material for dopamine and norepinephrine, the brain chemicals stress burns through. Under cold stress, the tyrosine group kept their clear-thinking ratings while placebo slipped.

L-Tyrosine is in Delta Brain

THE RESEARCH, AT A GLANCE

What TRT doesn't cover, and what's been studied for it

THE ISSUE INGREDIENT STUDIED FOUND IN

Stress & mood L-Theanine DELTA BLACK

Falling asleep & sleep quality Magnesium DELTA BLACK

Your sleep signal L-Tryptophan DELTA BLACK

Focus under stress L-Tyrosine DELTA BRAIN

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