Essentials: Micronutrients for Health & Longevity | Dr. Rhonda Patrick

Welcome to Huberman Lab Essentials. We pull the most useful, science-backed tools for mental and physical performance. I’m Andrew Huberman from Stanford, and today I’m joined by Dr. Rhonda Patrick.

Temperature is a powerful lever. Cold and heat both boost metabolism and brown fat. Are they tapping similar pathways, and what actually happens when we use them on purpose?

Our biology expects intermittent challenges like movement, food scarcity, heat, and cold, which switch on stress-response genes that make us more resilient. This hormetic effect overlaps across stressors, with heat shock proteins activated by heat, some plant compounds like sulforaphane, and even cold, alongside NRF2 for detox.

There’s debate online about plants being harmful. Where do you land on that?

Broad claims aren’t helpful; sulforaphane from crucifers robustly activates NRF2 and glutathione-related genes that help clear carcinogens. People with gene variants that detoxify poorly can offset risk by eating broccoli and sprouts, which can raise brain glutathione in humans; sprouts can have up to one hundred times more than broccoli.

If raw broccoli is a non-starter, can cooking still work?

Cooking lowers sulforaphane, but adding about one gram of ground mustard seed to cooked broccoli can quadruple it.

Do you eat this daily?

I often use supplements, and I add moringa powder to smoothies since it similarly activates NRF2.

Round out your top brain-and-body nutrients. I’m guessing omega-3 makes the list.

Marine omega-3s EPA and DHA are foundational; triglyceride forms absorb well, and ethyl esters are fine with food. I like around two grams daily and point people to independent testing sites that verify content, contaminants, and oxidation.

What do two to four grams of EPA a day do for us?

Omega-3s strongly modulate inflammation and aging, and the omega-3 index in red blood cells tracks long-term status; the US averages around five percent while Japan sits near ten to eleven percent with longer life expectancy. Moving from four to about eight percent is linked to lower mortality, and most folks reach that with at least two grams daily.

How should people measure and time this?

Test the omega-3 index in red blood cells, then retest after about one hundred twenty days since that’s their turnover.

Mechanistically, how do EPA and DHA help the brain?

EPA and DHA generate resolvins and other mediators that resolve inflammation and support serotonin release. DHA also shapes membrane fluidity, which tunes receptors and transporters; deficiency alters serotonin and dopamine signaling, while adequate DHA supports brain development.

We’ve covered plant compounds and omega-3s. What’s the third pillar for you?

Vitamin D. Around seventy percent of the US is insufficient, and optimal appears near forty to sixty nanograms per milliliter. It acts as a hormone regulating more than five percent of protein-coding genes, including the brain enzyme that converts tryptophan to serotonin.

What’s a sensible approach to D3, and what about food or sun?

Use D3 supplements, since food won’t correct a deficiency, and get sunlight when possible though synthesis declines with age. Genetic studies link low vitamin D production to higher all-cause, respiratory, and cancer mortality and greater multiple sclerosis risk; as a guide, one thousand IUs often raises levels about five nanograms per milliliter.

If someone won’t test and just takes D3, is one to five thousand IUs generally reasonable?

Toxicity is hard to reach and usually requires extremely high, prolonged dosing, and a small trial showed four thousand IUs daily in deficient African-Americans reversed epigenetic aging by about three years. Even so, I still recommend testing and getting sun.

Any other nutrients you consider especially useful?

Magnesium matters; about forty percent of people fall short, and it’s needed to make and use ATP and to run DNA repair enzymes. I split smaller doses to avoid gut upset, like around one hundred thirty milligrams at a time, and favor forms like threonate or malate, while also eating leafy greens, green apples, and tart cherries.

On cold exposure, what dose gives the most bang for focus and mood?

I do about three minutes at forty-nine degrees Fahrenheit and often use it before public speaking because I feel calmer and sharper afterward.

That lift likely comes from a slow, sustained dopamine rise that lasts for hours, unlike the spike-and-crash from stimulants; frequent use may blunt it as you adapt.

I actually want adaptation because it builds mitochondria and favors non-shivering thermogenesis where uncoupled mitochondria burn fuel to make heat. Norepinephrine and PGC1-alpha drive browning of fat and mitochondrial biogenesis in adipose and muscle, which supports heat production, endurance, and healthy aging.

What’s your training and heat routine?

I do a hard Tabata session for about ten minutes, then hit a sauna preheated to about one hundred eighty-nine degrees Fahrenheit, hydrate, and study or rehearse inside; the mild stress helps me memorize.

That fits the inverted U for adrenaline and memory. How does heat compare to cardio for brain and heart benefits?

Heat and moderate aerobic exercise share physiology with increased heart rate, blood pressure, and brain blood flow, followed by lower resting levels after. Using a sauna four to seven times a week links to more than sixty percent lower dementia and Alzheimer’s risk and large drops in cardiovascular mortality, with duration around twenty minutes near one hundred seventy-four degrees Fahrenheit being a key threshold; it’s helpful even for people who can’t exercise, with standard safety caveats.

No sauna? Will a hot bath do?

A bath around one hundred four degrees Fahrenheit for twenty minutes, shoulders down, raises heat shock proteins and BDNF, and local heat has reduced disuse muscle atrophy by roughly forty percent in studies.

We covered a lot. Thank you for the depth and clarity; I learned a ton.

My pleasure. I loved the conversation.