Medium-Chain Triglycerides for Health & Longevity - Quick Reference Sheet

Medium-Chain Triglycerides for Health & Longevity

Created on 07/09/2026 – Quick Reference based on Evidence Review created using AI4L / Opus 4.8 Audit

Medium-chain triglycerides are an inexpensive, well-tolerated fat the body absorbs fast and partly turns into a backup fuel for brain and muscle. The most reliable effect is a mild, short-lived rise in that fuel. Modest weight and early-memory benefits are real but small; digestive upset is common, and cholesterol may edge upward. (Full Review)

Protocol

Dose
15–30 g/day
Titrate up from a ~5 g start (about 1 tsp)
Dosing
Split 2–3×/day
Better digestive tolerance than one large dose
Timing
Flexible
Fasted/pre-task raises ketones; with food improves tolerance
Time to effect
Ketones & energy
1–2 hours
Rise peaks, then fades within ~3–4 h
Weight & appetite
Weeks
Builds gradually when substituted for other fats
Cognition
Weeks–months
In studied populations with early memory decline

Benefits

Contraindications
  • Medium-chain fatty acid oxidation disorders, e.g., MCAD (absolute)
  • Decompensated cirrhosis (Child-Pugh Class C)
  • Poorly controlled type 1 diabetes without medical supervision
Key Interactions
  • SGLT2 inhibitors (canagliflozin, empagliflozin, dapagliflozin)
  • Insulin and insulin secretagogues (glipizide, glimepiride)
  • Valproate and other anti-seizure regimens
  • Orlistat
  • Exogenous ketone salts and esters
  • Ketogenic diet or fasting

Risk & Side Effects

  • High: Gastrointestinal distress
  • Medium: Unfavorable shifts in blood cholesterol
  • Low: Excess caloric intake and unwanted weight gain; ketone elevation in poorly controlled diabetes
  • Speculative: Long-term cardiovascular uncertainty; rare hepatic and metabolic concerns

Monitoring

Marker Target Why
LDL cholesterol <100 mg/dL (lower if high risk) Main marker MCTs may push upward
ApoB <80 mg/dL (lower if high risk) Counts atherogenic particles; more precise than LDL alone
Total & HDL cholesterol Total <200; HDL >50 (W) / >40 (M) mg/dL Context for LDL changes and overall lipid shift
Triglycerides <90 mg/dL Detects unfavorable fat handling
Fasting glucose 75–90 mg/dL Tracks glycemic effect, relevant on a low-carb regimen
HbA1c <5.4% Longer-term glucose control
Blood beta-hydroxybutyrate 0.3–1.0 mmol/L (targeting mild ketosis) Confirms the intended ketone effect and flags excess
ALT / AST ALT <25 (M) / <22 (W) U/L Reassurance given heavy hepatic delivery

Cadence: Baseline, then 8–12 weeks after reaching target dose, then every 6–12 months if continued

Qualitative Assessment

  • Digestive tolerance (absence of diarrhea, cramping, bloating)
  • Energy and freedom from mid-morning or mid-afternoon dips
  • Mental clarity, focus, and attention during tasks
  • Appetite and fullness between meals
  • Body weight and waist trend over weeks