The Evidence Digest Advertorial Sponsored content · September 2026
Close-up of fresh dark blueberries filling the frame

Nutrition · Five papers, one thread

What the Research Really Says About Deeply Coloured Foods and Staying Sharp

Sponsored by MemoFlow · 6 min read

Advertisement. This page is a paid advertorial for a dietary supplement, not a news publication or medical advice. MemoFlow is not a medicine and is not intended to diagnose, treat, cure or prevent any disease, including memory loss or dementia. Intended for adults 18+. Individual results vary. Consult your doctor before use, especially if you take any medication.

In brief

§01 — Where the habit came from

A spoonful a day, repeated a million times

The advice has been circulating for years: raw honey, one spoon, first thing in the morning, as part of a healthy daily routine. It spreads easily because it is cheap, pleasant and sounds plausible.

And the plausibility is earned. Honey carries antioxidant and anti-inflammatory plant compounds, and a 2023 review in Oxidative Medicine and Cellular Longevity catalogued the ones showing the most promise for supporting the brain.1

What the advice never specifies is which compounds, or how much of them a spoon actually contains. That is the gap this digest is about.

§02 — The papers

Three independent lines pointing the same way

Across quite different study designs, the same pigment family keeps surfacing: anthocyanins, responsible for the deep colour of blueberries, blackcurrants, purple grapes and certain dark honeys.

PaperWhat it examinedWhat it reportedRef.
Systematic review, Mol Nutr Food Res (2021) Berry anthocyanins, cognitive performance and vascular function Consistent signals across trials, judged worth further study [2]
Controlled study, J Agric Food Chem (2010) Older adults drinking wild blueberry juice daily for 12 weeks Better scores on learning and word-recall tasks [3]
Meta-analysis of randomised trials Pooled anthocyanin supplementation results Favourable effects on short-term memory, verbal learning, executive function [4]

What this supports

  • Anthocyanins are the component researchers keep measuring
  • Concentration matters more than the ritual itself
  • Dietary intake and supplementation have both been trialled

What it doesn't settle

  • How much of the effect any one person should expect
  • Trial sizes vary, and some are small
  • Whether honey specifically was the source in these studies

Read plainly, the literature narrows the question rather than answering it outright: if the pigments are the part that matters, then the pigment density of the food is what deserves attention.

An overhead spread of fresh vegetables, eggs and greens on a wooden table
// Colour density across the plate is the practical version of the same idea.

§03 — Source material

Why two jars of honey are not the same product

Honey inherits its character from the flowers, soil and altitude behind it. Blended supermarket honey tends to be pale and light on pigment. Wild honey from mineral-rich terrain runs darker and denser.

That is what took this particular team to the hills of Ikaria, a small island in the eastern Aegean, where the honey comes out notably dark.

Ikaria is already familiar territory in longevity research: it is one of the handful of regions classed as Blue Zones, where living past ninety while staying active, social and quick in conversation is ordinary. The honey does not explain the island — but it is a sensible place to go looking for a denser source.

§04 — Mechanism

The brain runs on delivered fuel

The brain accounts for around two percent of body weight and roughly twenty percent of daily energy use, almost all of it glucose. That fuel arrives through healthy circulation and has to be used efficiently once it does.

Anthocyanins are studied on both sides of that: antioxidant activity at the cellular level, and support for the healthy blood flow that handles delivery.2 Sleep, movement and a varied diet do the rest of the work.

§05 — The formula

MemoFlow, in specification form

MemoFlow® — ingredients as disclosed by the manufacturer
Active 01
Ikarian mountain honey extract (anthocyanins)Plant pigments providing antioxidant support as part of a balanced diet.
Active 02
Lithium orotateA trace-mineral form of lithium at a nutrient-level dose. Not prescription lithium carbonate.5
Format
Sublingual drops — two under the tongue each morning, roughly ten seconds.
Serving
2 drops once daily. 30 mL bottle, approximately one month of use.
Not included
No stimulants, no hormones, no drugs, no artificial dyes, no capsules, no powders.
Manufacturing
Made in the USA in an FDA-registered, GMP-certified facility, batch-tested before shipping. The complete Supplement Facts panel is printed on the product label.
Guarantee
90 days, full refund, no explanation required.

Lithium is a trace element naturally present in some drinking water and foods, and its dietary role has been studied for decades.5 The form and dose in this product are a dietary supplement, not a medication, and lithium can interact with certain prescription drugs.

Warnings: For adults 18 and over. Do not use if pregnant, nursing, or if you have kidney or thyroid conditions. Do not combine with prescription lithium, diuretics, ACE inhibitors, NSAIDs or other medications without first consulting your doctor.

Keep out of reach of children. Discontinue use and consult a physician if any adverse reaction occurs. Do not exceed the recommended dose. Always read the product label before use.

Primary source

Product details, guarantee and current pricing

Open the MemoFlow page → 90-day money-back guarantee · Free shipping · Dietary supplement · Results vary

§06 — Field notes

What people using it report back

“Names and words arrive when I want them. I notice it most in conversation.”

Yvonne, 68

“Clear mornings, no fuss. Ten seconds and I'm on with the day.”

Douglas, 74

“I'm on form at dinner — the long stories, all the details in order.”

Colette, 70

Individual results vary. These are voluntary personal accounts, are not typical results, and are not clinical evidence. This product is not intended to treat memory loss or any medical condition.

§07 — Queries

Reader questions

Is ordinary honey still worth eating?

Yes. It remains a pleasant natural food. It simply tends to be low in anthocyanins, and the research above works with considerably higher amounts.

What kind of lithium is in the formula?

Lithium orotate at a nutrient-level dose, as listed in the ingredients above.5 It is not prescription lithium and should not be combined with it, or with other medications, without medical advice.

Is this a medicine?

No. MemoFlow is a dietary supplement. It does not treat, cure or prevent any disease. If you have concerns about memory or cognition, speak to your doctor.

Why drops instead of a capsule?

Sublingual delivery uses the tissue under the tongue, which is why the routine is two drops rather than something to swallow with water.

Next step

See the product for yourself

Learn more about MemoFlow → 90-day money-back guarantee · Free shipping · Dietary supplement · Results vary

References

  1. Al-Shahi R, et al. Honey on brain health: a promising brain booster. Oxid Med Cell Longev, 2023. PMID 36733498
  2. Ahles S, et al. Effects of berry anthocyanins on cognitive performance, vascular function and cardiometabolic risk markers: a systematic review. Mol Nutr Food Res, 2021. PMC8234025
  3. Krikorian R, et al. Blueberry supplementation improves memory in older adults. J Agric Food Chem, 2010;58(7):3996–4000. PMID 20047325
  4. The effect of anthocyanins on cognition: a systematic review and meta-analysis of randomized clinical trial studies. PMC11775034
  5. Schrauzer GN. Lithium: occurrence, dietary intakes, nutritional essentiality. J Am Coll Nutr, 2002;21(1):14–21. PMID 11838882