HoldsUp

Mark Hyman, MD · 2025-05-28 · Mark Hyman (host), Jeff Bland

Longevity Doctor: I’m 79 With the Health of a 40 Year Old, Here’s How I Did It!

33 research-tied claims examined: 4 contradicted 5 overstated 3 context 16 supported 5 unverified

3

Needs context

0:11:58Jeff Blandneeds contextvery low

In a 1991 study by Jeffrey Bland's group with 80 participants (30 standard of care, 50 on a phytochemical-rich, low-allergen diet), the intervention group had approximately a 60% reduction in symptoms compared to controls over two months.

"The first issue of that journal, I published a research paper that was on this very topic that you're talking about... We studied, I think it was 80 people that we had. 30 of those people were on a kind of standard of care, and then 50 of them were on an intervention program like you've just described... And we saw about a 60% reduction in symptoms of the treatment group versus the control group. And that was published in 1991." (said at 0:11:58)

The speaker appears to be describing a 1995 study by Bland et al. published in Alternative Therapies in Health and Medicine. In that study of 106 chronically ill patients (rather than 80 in 1991), 84 patients received a medical food supplement plus an oligoantigenic, calorie-controlled elimination diet, while 22 received the elimination diet alone (rather than 50 vs. 30 standard of care). Over 10 weeks, patients in the intervention group experienced a 52% reduction in symptom scores on the Metabolic Screening Questionnaire, compared to a 22% reduction in the control group. The study was an unblinded, non-randomized comparative trial relying on subjective questionnaires.

0:45:35Mark Hyman (host)needs contexthigh

Buckwheat is botanically a flower rather than a grain and is genetically unrelated to wheat.

"Himalayan Tartary buckwheat—this is an ancient plant. It's actually a flower, not a grain. Even though it's called buckwheat, it's not wheat, or no connection to the genes of wheat at all." (said at 0:45:35)

Botanically, Himalayan Tartary buckwheat (Fagopyrum tataricum) is a dicotyledonous flowering plant in the knotweed family (Polygonaceae), whereas true grains such as wheat belong to the grass family (Poaceae, monocots). Because its edible seeds are used similarly to cereal grains despite not being a true grass, buckwheat is classified as a pseudocereal. While it is derived from a broadleaf flowering plant and is phylogenetically distant from wheat (and naturally gluten-free), the consumed food product is the seed (achene), not the flower itself.

0:50:49Jeff Blandneeds contexthigh

Macrophages engulf foreign particles and kill them through the Klebanoff reaction producing hydrogen peroxide and oxidants.

"The macrophage, which is a member of those the cell type in the innate immune system, has these arms as it's a big floppy Jabba the Hutt type cell and it puts its arms around foreign stuff and then it squeezes it and then it releases chemical the Klebanoff reaction, which as you said are hydrogen peroxide and oxidants that kill it." (said at 0:50:49)

The speaker correctly identifies that phagocytic innate immune cells engulf pathogens and generate hydrogen peroxide and reactive oxidants to kill them, and accurately describes the biochemical components of the Klebanoff system (hydrogen peroxide and peroxidatic oxidants). However, attributing the Klebanoff system directly to mature macrophages requires qualification: the Klebanoff system relies on myeloperoxidase (MPO) reacting with hydrogen peroxide and a halide to generate potent oxidants (such as hypochlorous acid). While neutrophils and early circulating monocytes contain abundant granular MPO and utilize the Klebanoff system, mature macrophages lose granular myeloperoxidase during differentiation and primarily rely on MPO-independent oxidative and non-oxidative mechanisms.

Unverified means no publication matching the claim was located; it does not prove the claim false. Spotted an error? See the corrections policy - disputes from the people quoted are prioritized.