Rosh Hashanah and Renewal: What Tradition, Nature, and Science Know About New Beginnings
- Rosh Hashanah is the only festival in the Hebrew calendar that falls when the moon is hidden, a renewal that begins in darkness like mycelium under the soil.
- Habit research describes a fresh start effect: temporal landmarks such as a new year raise the willingness to begin a new routine.
- Lion's Mane has been studied for cognition and mood in small human trials, and some of the findings have not yet been replicated.
- Reishi has been studied for fatigue in human trials, while the sleep findings come from animal studies only.
- The page's Tishrei routine shows how an extract can fit a new morning and evening routine, in measured research-based language.
Rosh Hashanah (רֹאשׁ הַשָּׁנָה, “head of the year”) opens the Jewish year 5787 — erev Rosh Hashanah falls on Friday, September 11, 2026, and the holiday runs September 12–13 (1–2 Tishrei). The Talmud notices something remarkable about it: it is the only Jewish festival that falls when the moon is completely hidden. Renewal begins in darkness — which is literally how mycelium works under the forest floor, and close to what behavioral scientists measured as the “fresh start effect.” This page brings verified sources only — Talmudic, kabbalistic, Buddhist, ecological, peer-reviewed: nothing invented, everything cited.
Why this page reads differently from a “new year, new you” post. Every Jewish source below was checked word-for-word against the original text. Where a beautiful quote could not be verified — there is no Zohar passage tying renewal to Tishrei — we say so instead of inventing it. The science gets the same honesty: unreplicated trials, mouse studies, and yeast-not-mushroom data are labeled as such.
Key takeaways
- The dates: erev Rosh Hashanah 5787 is Friday, September 11, 2026; the holiday is September 12–13.
- The central idea: the only festival on which “the moon is covered” (Psalms 81:4; Sanhedrin 11b) — the year begins when renewal cannot yet be seen.
- The daily version: “who renews in His goodness, every day, continually, the work of creation” (morning liturgy).
- The science: temporal landmarks measurably increase aspirational behavior (Dai, Milkman & Riis, 2014).
- The mushrooms, honestly: fungi are “indispensable for the Earth’s carbon cycle”; the extract evidence is real but small.
When is Rosh Hashanah 5787 — and why is it the festival of new beginnings?
Erev Rosh Hashanah falls on Friday, September 11, 2026; the two days of the holiday are September 12–13 — the 1st and 2nd of Tishrei, 5787. The Mishnah (Rosh Hashanah 1:1) counts four “new years”; this one is the new year for years themselves.
The midrash records a dispute: Rabbi Eliezer taught the world was created in Tishrei; Rabbi Yehoshua said Nisan (Genesis Rabbah 22:4). The liturgy sides with Tishrei — “This is the day of the beginning of Your works” (Rosh Hashanah 27a) — and Musaf declares three times: Hayom Harat Olam, “Today the world is conceived.” Harat is a conception word — beginning inside darkness. Creation is not remembered; it is repeated.
Why does the Jewish year begin when the moon is hidden?
Psalms 81:4 commands: “Sound the shofar at the new moon, at the covered time (bakeseh) for our festival day.” The Talmud asks which festival falls when the moon is covered, and answers: “this is Rosh Hashanah” (Sanhedrin 11b). Every other festival meets a visible moon.
Pesach and Sukkot begin on the 15th, under a full moon; Rosh Hashanah alone falls when the moon has vanished and its renewal shows nothing yet. The year opens where the new thing exists unseen — which is also what mycelium does under the soil for months before a mushroom appears.
What is the shofar trying to wake up?
Maimonides: although the shofar is a scriptural decree, it carries a hint — “Awake, sleepers, from your sleep; and slumberers, rouse yourselves from your slumber; search your deeds, return in repentance, and remember your Creator” (Mishneh Torah, Hilchot Teshuvah 3:4).
The shofar, in this reading, is not an announcement but an alarm for people who are technically awake — it interrupts autopilot. Calendar landmarks, science found, do something similar; the Rambam described the mechanism nine centuries before anyone measured it.
What do apples and honey actually ask for?
Not from the Talmud. The Talmudic list of Rosh Hashanah foods (Keritot 6a) is gourd, fenugreek, leek, beet, and dates. The apple in honey enters with the Rema’s gloss on the Shulchan Aruch (Orach Chayim 583:1, 16th century) — with its blessing: “may You renew for us a sweet year.”
Abaye’s principle there — simana milta hi, “an omen is a real thing” — is about intention: eat foods whose names sound like blessings. The operative verb of the most famous custom is renew; the Rema also records tashlich — “You will cast all their sins into the depths of the sea” (Micah 7:19). The simanim say aloud what you intend the year to be.
What does Kabbalah say about constant renewal?
The daily liturgy already makes the radical claim: the Yotzer Or blessing, said every morning, praises God “who renews in His goodness, every day, continually, the work of creation.” Creation is not a finished past event but an ongoing act — renewed daily, noticed or not.
The Zohar’s verifiable contribution runs through the moon: “the moon has no light of its own; it shines only when the sun joins it” (Vayechi portion), and “the renewal of the moon by the sun” (Pekudei portion). Renewal is never self-generated — the moon empties monthly and is refilled through connection. Honesty note: no Zohar passage links renewal to Tishrei; its renewal language is lunar — exactly the holiday’s axis. And the prophet: “They are renewed every morning” (Lamentations 3:23).
What does Buddhism see in the same idea?
From the opposite direction: instead of one night a year, no fixed thing at all. Anicca — impermanence — is one of the three marks of existence: “All conditioned things are impermanent — when one sees this with wisdom, one turns away from suffering” (Dhammapada 277, trans. Buddharakkhita).
In mindfulness-of-breathing (ānāpānasati), each breath is a fresh beginning — the structure of the practice itself. Zen adds shoshin: Shunryu Suzuki opened Zen Mind, Beginner’s Mind (1970) observing that the beginner’s mind holds many possibilities, the expert’s few. One shared point: the person you were is not a life sentence.
How do the four traditions line up, side by side?
Remarkably well. Judaism, Kabbalah, Buddhism, and forest ecology describe renewal in four vocabularies — hidden moon, daily re-creation, impermanence, decomposition — yet the shape is the same: the new begins unseen, and the old must be released. The table sets them side by side, verified sources only.
| Tradition | The idea | Verified source | Into the new year |
|---|---|---|---|
| Judaism | The year begins when the moon is hidden; the shofar wakes sleepers | Psalms 81:4; Sanhedrin 11b; Rambam, Hilchot Teshuvah 3:4 | Start before you can see results |
| Kabbalah & liturgy | Creation renewed “every day, continually”; the moon renewed through connection | Yotzer Or blessing; Zohar, Vayechi and Pekudei portions | Renewal is daily maintenance — not done alone |
| Buddhism | All conditioned things are impermanent; the beginner’s mind holds more possibilities | Dhammapada 277; Suzuki, Zen Mind, Beginner’s Mind (1970) | Hold last year’s identity lightly |
| Forest ecology | Fungi break down the dead and feed the new | Lundell et al. 2010 (PMID 20175122) | Growth is funded by letting go of the old |
Where our farm fits, honestly: for a morning learning routine — lion’s mane, fresh fruiting-body extract: 23.93% beta-glucan, dry basis (tested at TÜV Austria), ratio 1:2 — 25 g fresh mushroom per 50 ml. For evening, many pair it with reishi — see Reishi for Calm and Reishi for Sleep. Every goal: Medicinal Mushrooms by Goal · Triterra Farm.
What do mushrooms know about renewal that we don’t?
That renewal is powered by decomposition. Filamentous fungi are “indispensable for the Earth’s carbon cycle, generation of soil humic matter and formation of soil fine structure” (Lundell et al., 2010). Without fungi breaking down dead wood, the forest would suffocate in its own past.
Lignin — wood’s toughest polymer — is degraded almost exclusively by white-rot fungi (Lundell et al., 2010). The “wood wide web” needs honest sizing: the latest review warns the term drifted into “hyperbole and misinterpretation,” while confirming the networks are real (Merckx et al., 2024). Mycelium works unseen for months; the mushroom is the visible conclusion of an invisible beginning — why we go straight from harvest to extraction, no drying step.
Does a “fresh start” actually work, according to science?
Yes — measurably. Dai, Milkman and Riis (2014) analyzed Google searches for “diet,” gym attendance, and goal commitments: all three rise after temporal landmarks — a new week, month, year, a birthday, a holiday. They named it the fresh start effect.
The mechanism reads like a secular Rambam: landmarks open new “mental accounting periods,” closing the ledger on past failures. Five follow-up experiments made it causal: new-beginning framing increases goal initiation by disconnecting people from their “imperfect past selves” (Dai, Milkman & Riis, 2015). Rosh Hashanah is the largest temporal landmark in the Jewish calendar. Use it for the launch; what survives is the habit attached to an existing daily anchor. One later caveat: if your routine already works, Tishrei is no obligation to restart it.
Where do mushroom extracts honestly fit a new-year routine?
As a small, repeatable anchor — not as the change itself. The studied pairing is lion’s mane in the morning, where human studies looked at cognition and mood, and reishi in the evening, where the human evidence concerns fatigue. Both are taken daily; neither is felt like caffeine.
| When | The habit | Where the extract fits | What the research says — hedged |
|---|---|---|---|
| Morning | Attach to an existing anchor — after the first coffee | Lion’s mane (1:2 — 25 g fresh per 50 ml) | Six small human studies; the best-known finding faded after stopping and is unreplicated |
| Evening | A fixed wind-down ritual | Reishi — see Reishi for Calm | Human trials measured fatigue (Tang 2005); sleep findings are from mice |
| Weekly | One fixed self-check | — | Small recurring landmarks also trigger fresh-start motivation |
| Season | Autumn is when to prepare winter routines | Measured beta-glucan, published — why beta-glucan | The winter-infection trials used yeast beta-glucan, not mushroom |
Timing: the timing and stacking page; doses: the dosage guide; expectations: “how long until you feel it.” Two farm facts: fresh fruiting bodies, triple extraction — cold water, seven weeks in alcohol, hot water — under the kosher supervision of the Mateh Yehuda Rabbinate (Rabbi Gad Atias).
What has lion’s mane actually shown in human studies?
Six small human studies, mostly positive, all limited. The best known — 30 older adults with mild cognitive impairment, 16 weeks — found improvement that disappeared four weeks after stopping; a 2024 review notes the finding “has yet to be replicated.” That is the honest headline.
| Study | Who and how long | Found | Does not show |
|---|---|---|---|
| Mori 2009 | 30 adults 50–80, mild cognitive impairment; ~3 g/day, 16 weeks | Cognitive scores higher at weeks 8–16 | Faded after stopping; n=30; unreplicated |
| Nagano 2010 | 30 women, 4 weeks | Depression scores fell vs baseline | Authors suggest a non-NGF mechanism; small, short |
| Saitsu 2019 | Double-blind RCT, fruiting body, 12 weeks | MMSE improved | Two other cognitive tests: no effect |
| Vigna 2019 | 77 overweight adults, 8 weeks | Mood and sleep-disorder scores improved; pro-BDNF rose | BDNF itself unchanged |
| Docherty 2023 | 41 healthy adults; 1.8 g, acute + 28 days | Faster Stroop after one dose (p = 0.005) | 28-day stress trend missed significance (p = 0.051) |
| Li 2020 | Early Alzheimer’s; enriched mycelium, 49 weeks | MMSE and daily function favored supplement | Industry-run; mycelium, not fruiting body |
Three caveats we will not bury: the “NGF story” is preclinical — cells and mice — and the hericenones usually credited failed to raise NGF in that very study; the 2024 ALSUntangled review calls the record “a temporary improvement… yet to be replicated” and documents one anaphylaxis case; and no study used a tincture like ours — so we publish what is in our bottle (certificates open, how to read them) instead of borrowing results.
What about reishi — does it help sleep, or something else?
The human evidence is about fatigue, not sleep. In a randomized double-blind trial of 132 people with neurasthenia, 8 weeks of a Ganoderma lucidum polysaccharide extract reduced fatigue sensation by 28.3% (placebo: 20.1%), with 51.6% versus 24.6% rated meaningfully improved (p = .002) (Tang 2005).
The sleep claim rests on mice: reishi shortened sleep latency via a gut-microbiota-and-serotonin pathway — and when the microbiome was depleted with antibiotics, the effect vanished (Yao 2021). So we phrase the evening slot exactly: reishi’s measured human outcomes are fatigue and well-being — see Reishi for Sleep.
Why is autumn the time to think about winter immunity?
Because the trials that exist ran through winter — and honesty requires a disclosure first: the good human studies of beta-glucan and winter respiratory infections used baker’s yeast beta-glucan, not mushroom. The molecules are related but not identical; yeast results must not be dressed up as mushroom results.
The yeast record: 100 adults over 90 winter days had 17 confirmed infections versus 28 on placebo — short of significance, p = 0.149 (Fuller 2017); 299 adults over 16 winter weeks caught just as many colds, but symptom severity was significantly lower in the first week (Dharsono 2019). Severity sometimes improves; incidence essentially does not — and for mushroom beta-glucans there is no equivalent human evidence. We offer transparency instead: measured beta-glucan — reishi 25.65%, lion’s mane 23.93%, dry basis, TÜV Austria — and the immunity solution page.
What does this page not claim?
A lot, deliberately. We do not claim mushroom extracts renew you, detox you, or guarantee any felt outcome. We do not claim the Zohar speaks about Tishrei (it does not, as far as we verified), that apples and honey are Talmudic (Rema), or that reishi is proven for sleep (mice).
Also on the record: the landmark lion’s mane finding is unreplicated; the NGF mechanism is preclinical; the winter beta-glucan data are from yeast; no study used our exact extract. What remains is a verified chain — tradition, forest, and laboratory describing the same shape of renewal: beginning in darkness, sustained daily, powered by letting go of the old.
A sweet and renewing year — שנה טובה ומתחדשת. Extracts from fresh fruiting bodies grown on the farm, TÜV Austria tests published openly, a 100-day trial period, free shipping in Israel over ₪285. Not sure which mushroom fits your goal for 5787? Take the quiz All extracts
The bottom line
Rosh Hashanah 5787 begins on Friday evening, September 11, 2026 — at the one point in the year when the moon is entirely hidden: the year opens where renewal is real but not yet visible (Psalms 81:4; Sanhedrin 11b). The liturgy makes renewal daily; the Zohar, relational; Buddhism, constant; forest fungi, physical; behavioral science, measurable. Our extracts are a small daily anchor at the modest end of that chain, the evidence at its true size. The tradition begins its year in the dark and calls that a feature. So do we.
Frequently asked questions
When does Rosh Hashanah fall in 2026?
Erev Rosh Hashanah is Friday, September 11, 2026; the holiday is September 12–13 — the 1st and 2nd of Tishrei, opening the year 5787.
Why is Rosh Hashanah considered the festival of renewal?
Three verified reasons: it is the only festival falling when the moon is hidden (Psalms 81:4; Sanhedrin 11b); Musaf declares “today the world is conceived”; and Maimonides reads the shofar as a wake-up call — “Awake, sleepers, from your sleep” (Hilchot Teshuvah 3:4).
Are apples and honey a Talmudic custom?
No. The Talmud’s list is gourd, fenugreek, leek, beet, and dates (Keritot 6a). The apple in honey — with “may You renew for us a sweet year” — appears in the Rema’s gloss (Orach Chayim 583:1).
Does lion’s mane improve memory?
The evidence is preliminary. The best-known trial — 30 older adults, 16 weeks — found improvement that faded after stopping, and a 2024 review notes it “has yet to be replicated.” Five other small studies show mixed, modest results — promising signals, not proof.
Does reishi help you sleep?
In humans, what was measured is fatigue: an 8-week trial in 132 people found reduced fatigue sensation versus placebo (Tang 2005). The sleep findings come from mice, where the effect disappeared when gut bacteria were depleted (Yao 2021).
Do mushroom beta-glucans prevent winter colds?
The quality human trials used yeast beta-glucan, not mushroom — and even there the effect was mostly on symptom severity, not on how many colds people caught. For mushroom beta-glucans there is no equivalent human evidence; we publish our measured content instead.
Are Triterra extracts kosher for the holiday table?
Yes — under the kosher supervision of the Mateh Yehuda Rabbinate (Rabbi Gad Atias). Fresh fruiting bodies, triple extraction — cold water, seven weeks in alcohol, hot water — with the TÜV Austria beta-glucan tests published openly.
Scientific sources (peer-reviewed)
- Mild cognitive impairment, n=30, 16 weeks: cognition improved, declined after stopping — Mori K, et al. Phytotherapy Research, 2009;23(3):367-72. View on PubMed
- 30 women, 4 weeks: depression scores reduced — Nagano M, et al. Biomedical Research, 2010;31(4):231-7. View on PubMed
- 12-week RCT, fruiting body: only MMSE improved — Saitsu Y, et al. Biomedical Research, 2019;40(4):125-131. View on PubMed
- 77 overweight adults, 8 weeks: mood and sleep-disorder scores improved; pro-BDNF rose — Vigna L, et al. Evidence-Based Complementary and Alternative Medicine, 2019:7861297. View on PubMed
- 41 healthy adults, 1.8 g: faster Stroop after one dose (p = 0.005) — Docherty S, Doughty FL, Smith EF. Nutrients, 2023;15(22):4842. View on PubMed
- Early Alzheimer’s, 49 weeks, erinacine-A mycelium: MMSE favored supplement; industry-run — Li IC, et al. Frontiers in Aging Neuroscience, 2020;12:155. View on PubMed
- 2024 review: “a temporary improvement… yet to be replicated” — Muhanna M, et al. ALSUntangled #73. Amyotrophic Lateral Sclerosis and Frontotemporal Degeneration, 2024;25(3-4):420-423. View on PubMed
- Neurasthenia, n=132, 8 weeks of reishi extract: fatigue down 28.3% vs 20.1% placebo (p = .002) — Tang W, et al. Journal of Medicinal Food, 2005;8(1):53-8. View on PubMed
- Mice: reishi shortened sleep latency; antibiotics abolished the effect — Yao C, et al. Scientific Reports, 2021;11:13660. View on PubMed
- The fresh start effect: aspirational behavior rises after temporal landmarks — Dai H, Milkman KL, Riis J. Management Science, 2014;60(10):2563-2582. View at publisher
- Five experiments: new-beginning framing causally increases goal initiation — Dai H, Milkman KL, Riis J. Psychological Science, 2015;26(12):1927-36. View on PubMed
- Fungi are “indispensable for the Earth’s carbon cycle” — Lundell TK, Mäkelä MR, Hildén K. Journal of Basic Microbiology, 2010;50(1):5-20. View on PubMed
- Fungal networks are real; the “wood-wide web” narrative drifted into hyperbole — Merckx VSFT, et al. Nature Plants, 2024;10(5):710-718. View on PubMed
- Yeast beta-glucan, n=100, 90 winter days: 17 vs 28 infections (p = 0.149, not significant) — Fuller R, et al. Nutrition, 2017;39-40:30-35. View on PubMed
- Yeast beta-glucan, n=299, 16 winter weeks: incidence unchanged; symptom severity lower — Dharsono T, et al. Journal of the American College of Nutrition, 2019;38(1):40-50. View on PubMed
Read next
- The Yom Kippur Fast: The Science-Based Guide
- Which mushroom is right for me?
- When to take mushroom extracts
- How long until you feel it?
- Fresh or dried — why we skip drying
- Medicinal Mushrooms by Goal
- The research hub
- The medicinal mushrooms pillar guide
- Triterra Farm — home
This page is educational and does not constitute medical or halachic advice; it describes verified sources and what published studies measured, and is not a recommendation to start, stop or dose any supplement. *These statements have not been evaluated by the Food and Drug Administration. This product is not intended to diagnose, treat, cure, or prevent any disease.*
