Concentrated green-leaf membranes, usually from spinach, taken before meals to curb hunger and cravings. Paired with a meal they reliably lower self-rated hunger and raise fullness, and dampen cravings for sweet and fatty foods. A few small studies suggest modest extra weight loss and better blood-sugar and cholesterol, mainly alongside a controlled diet or exercise. Promising but unproven. (Full Review)

Protocol

Standard Dose

5 g once daily

Thylakoid-rich extract, mixed into a drink, yogurt, or other food

Timing

Before breakfast

Pre-breakfast dosing dominates the literature; establishes satiety early

Dosing Pattern

Single pre-meal dose

Paired with a fat-containing meal; the satiety signal is meal-triggered, not interval-based

Time to effect

Appetite & Cravings

Within a single meal

Acute effect, appearing in test-meal studies

Weight

Over 12 weeks

Slow, modest weight change accrued over the full longer trial

Benefits

Medium: Reduced hunger and increased fullness; reduced cravings for palatable food

Low: Greater weight and fat loss; improved insulin sensitivity and glycemic measures; improved blood lipids

Speculative: Favorable shifts in adipokines and inflammatory markers; longevity-relevant metabolic benefit

Contraindications

Pregnancy or breastfeeding

Known spinach or leaf-vegetable allergy

Significant fat-malabsorption or pancreatic insufficiency

Marginal fat-soluble vitamin status

Key Interactions

Lipase inhibitor orlistat

Glucose-lowering medications (insulin, sulfonylureas)

Incretin-based therapies (GLP-1 receptor agonists such as semaglutide)

Over-the-counter medications taken with meals whose absorption depends on dietary fat

Additive satiety/fat-binding supplements (glucomannan, chitosan)

Fat-soluble vitamins (A, D, E, K) and carotenoids

Risk & Side Effects

Low: Mild gastrointestinal effects

Speculative: Reduced fat-soluble nutrient absorption; allergy or plant-protein sensitivity; unknown long-term safety

Monitoring

Marker	Target	Why
Body weight / waist circumference	Stable or trending down toward a healthy waist (<94 cm men, <80 cm women)	Primary practical outcome
Fasting glucose	70–90 mg/dL	Tracks glycemic effect
Fasting insulin	2–6 µU/mL	Detects insulin-sensitivity change
HbA1c	<5.4%	Longer-term glucose control
Total cholesterol	<180 mg/dL	Tracks lipid response
LDL cholesterol	<100 mg/dL (lower if higher risk)	Lipid marker reported to fall in trials
Triglycerides	<80 mg/dL	Fat-metabolism marker

Cadence: Baseline before starting, then at ~6 and 12 weeks; weight and waist most frequently, blood markers re-checked at 12 weeks; every 3–6 months if use continues

Qualitative Assessment

Hunger and fullness: reduced between-meal hunger and earlier fullness at meals
Cravings: fewer or weaker urges for sweet, salty, and fatty snacks, especially in the late day
Eating behavior: less compensatory or emotional overeating after the dosing meal
Energy and steadiness: steadier post-meal energy without sharp blood-sugar dips

Thylakoids for Health & Longevity

Protocol

Benefits

Risk & Side Effects

Monitoring

Qualitative Assessment