SKU PB1012EU · Fasting Mimicking Diet
L-Protein Bar (12 ct bars)
Discover our new Longevity Protein Bar: the only protein bar created by longevity scientists to fuel muscles without accelerating aging. Support your future, not just your next workout.
Longevity protein: designed for strength and healthy aging.
Support your strength without increasing aging factors
Truly clean vegan protein: non-GMO, soy-free, no artificial sweeteners or artificial colors
Plant-based proteins
Complete amino acid profile
Supported by 25 years of longevity science
Each box contains 12 bars of 45g each.
Nutritional Information
View L-Protein Bar Nutritional InformationShips from Lonso Milan facility · 72h after order confirmation · free cold-chain shipping on orders over €1,500.
10 g plant protein
Pea + brown rice, low methionine — the Longo longevity macro shape, in one 45 g bar.
No added sugar
Sweetened naturally with dates and inulin. Glycemic load deliberately low.
Travel-ready
Individually wrapped. Clean ingredient label. Patients keep one in the bag, not 'just in case'.
How it fits the protocol
Snack with intent. Between FMD cycles.
01
Refeed day (Day 6)
Half a bar with the day-6 breakfast — a gentle re-entry that respects the FMD without spiking insulin. Better than what most patients reach for unsupervised.
02
Travel & busy days
One bar in the bag covers a missed-meal moment. The single-serve format takes the planning burden off patients building the longevity habit.
03
Pre/post movement
10 g of complete protein, 30–60 minutes around a daily walk or strength session. Supports lean mass in the over-65 cohort without overshooting calories.
What's in the bar
10 g complete plant protein ina 180 kcal bar —no shortcuts.
The quality and rate of our biological aging are the main determinants of a long and healthy life. The L-Protein Bar's strength lies in its clean, complete plant-based protein that fuels strength and vitality—without the additives or pro-aging factors found in typical protein bars.
PER BAR
10 g
Pea + brown rice protein
65/35 blend · complete profile
The same complete blend used in L-Protein, scaled to a single-bar serving. Sufficient leucine above the MPS threshold, methionine intentionally low — the Longo Lab macro shape.
PER BAR
—
Dates + inulin
Phoenix dactylifera · chicory root
Natural date paste sweetens the bar without added sugars. Inulin from chicory adds soluble fibre (3 g/bar) that feeds the post-FMD microbiome — same prebiotic used in L-Biome.
PER BAR
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Almonds & seeds
Whole almond, sunflower, pumpkin
Monounsaturated fats from whole almonds (the Apulian variety used in L- Spread). Sunflower and pumpkin seeds add the vitamin E and magnesium that close common Mediterranean-diet gaps.
PER BAR
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Dark chocolate coating
≥ 70% cocoa · vegan
A ≥70% dark chocolate coating contributes a meaningful dose of flavanols and theobromine — the polyphenols associated with vascular and cognitive benefits in observational longevity research.
The cross-section
Four layers.
No hidden ingredients.
Every bar is built the same way — a chewy protein core bound by date paste, studded with whole almonds and seeds, coated in dark chocolate. The flavour switcher above changes the inclusions, not the macros.
Coating
≥70% dark chocolate · flavanols, theobromine
Core
Pea + brown rice protein, date paste, inulin
Inclusions
Whole almonds, seeds, cocoa nibs / berries / hazelnuts
Wrap
Individually sealed · 24-month shelf life unopened
Biological Age Score · Nature Aging, 2024
Three cycles. 2.5 years younger, on the data.
In the Mishra et al. 2024 trial (n=144, RCT), patients completing three consecutive Prolon FMD cycles reduced their Levine PhenoAge by an average of 2.5 years versus controls.
3 yrs
Biological Age Δ
−1.30 pp
HBA1C (12 wk)
−7.4%
Trunk Fat
96%
1st-Cycle Completion
