Compare experts › Vonda Wright vs Jason Fung

Vonda Wright vs Jason Fung

Vonda Wright (orthopaedic surgeon) and Jason Fung (physician, kidney specialist) side by side: how they train, eat, supplement and sleep, how strong the evidence is, and how to build a plan from either or both.

Build a plan from bothSee the protocols
Words explained (9)
Zone 2
Steady cardio at a pace where you can still talk in full sentences, but not sing.
Intervals
Short hard efforts with easy recovery in between, such as 30 seconds fast, 90 seconds slow.
4 × 4
Four rounds of 4 minutes hard with 3 minutes easy in between. Also called Norwegian intervals.
Mobility
Moving your joints freely through their full range.
Creatine
A well-studied supplement that supports strength and muscle.
Fibre
The part of plant foods you don't digest. It feeds healthy gut bacteria and keeps you full.
Time-restricted eating
Eating all your meals within a set window of the day, for example 8am to 6pm.
Hormone therapy (HRT, MHT)
Medicine that replaces hormones that fall at menopause. Only a doctor can prescribe it.
NAD
A molecule cells use for energy. Supplements are sold to raise it, but evidence in people is limited.

At a glance

MeasureVonda WrightJason Fung
BackgroundOrthopaedic surgeonPhysician, kidney specialist
Training split40% strength · 45% aerobic · 10% intervals · 5% mobility45% strength · 35% aerobic · 12% intervals · 8% mobility
Signature habitHeavy 4 × 4 + daily jumpsFasting, less sugar
Protein30 g+ at every mealNo fixed target
Training styleBones & jointsFasting
Overall evidenceSolidMostly weak
FollowingInstagram 1.7MYouTube 1.5M

Training splits are our estimates from each expert’s published routine. Following checked October 2026.

The key differences

  • Wright puts more of the week into aerobic base (zone 2): about 45% against 35%.
  • In plans in their style, Wright's hard sessions are short sprints; Fung's are 4-minute intervals (Norwegian 4 × 4).
  • We rate the evidence behind Wright's protocol higher: solid, against mostly weak for Fung.
  • Supplements that go into a plan: Wright, creatine monohydrate; Fung, none (food first). Prescription items and personal stacks stay out of every plan.
  • Neither has a separate mobility routine; plans add 10 minutes a day of basics.

Protocols side by side

Each line is rated for the evidence behind it. “Doctor only” items never go into a plan.

Training

Vonda Wright

  • Two strength sessions a week. Main lifts (squat, deadlift, bench press, a row or pulldown) as 4 sets of 4 reps: heavy enough that a fifth rep is possible but not a sixth.Some evidence
  • Accessory exercises: 2–3 sets of 8–12 reps.Some evidence
  • Beginners learn the lifts with light weights first; good technique can take 3–9 months. Add about 5–10% load every 1–2 weeks.Note
  • About 20 jumps in different directions every day, for bone.Some evidence
  • About 3 hours a week of easy cardio in 45–60 minute sessions, plus short sprints twice a week (for example 4 × 30 seconds with full recovery).Some evidence
  • A walk after your biggest meal, building up to 45 minutes, and a little one-leg balance practice every day.Some evidence

Jason Fung

No specific guidance in what we reviewed.

Eating

Vonda Wright

  • At least 30 g of protein at every meal, spread through the day: about half a gram per pound of body weight (about 1.1 g per kg).Some evidence
  • About 30 g of fibre a day, a little healthy fat, and an anti-inflammatory way of eating.Some evidence
  • Log your food for three weekdays and two weekend days to see what you really eat.Personal habit

Jason Fung

  • Cut added sugar and refined grains; eat whole foods with natural fats.Some evidence
  • Stop snacking: three meals a day, then skip one meal a day.Personal habit
  • Eat within a shorter window of the day (time-restricted eating).Some evidence
  • Fasts of 24 hours (skipping two meals in a row) two or three times a week, as used in his clinic's programme.Personal habit
  • Longer fasts of several days; in 2016 he said fasts of up to a month were fine.Doctor only
  • For type 2 diabetes: no sugary drinks, fructose or processed food, and more natural fats.Doctor only

Supplements

Vonda Wright

  • Creatine 3–5 g a day for strength.Strong evidence
  • Test vitamin D and supplement to reach a healthy range.Doctor only
  • Supplements aimed at clearing ageing 'zombie' cells, and the urolithin A and NAD+ precursor she has said she takes.Personal habit

Jason Fung

No specific guidance in what we reviewed.

Sleep & recovery

Vonda Wright

  • Put sleep first, before changing your diet or training.Personal habit

Jason Fung

No specific guidance in what we reviewed.

Weak spots to know

Vonda Wright

  • The 20-jumps-a-day figure, and the 1–3% bone gain she links to it, were given without a cited study in the interview we read.
  • Her suggestions of senolytic supplements, urolithin A and NAD+ precursors rest on early, mostly small or animal studies.
  • Heavy 4-rep lifting suits most healthy women with good coaching, but beginners and anyone with osteoporosis need a slow, supervised start.

Jason Fung

  • Red Pen Reviews scored The Obesity Code at 31% for scientific accuracy, and The Diabetes Code at 33%.
  • His central claim that calories do not matter is contradicted by controlled studies.
  • Much of his support comes from case reports, small older studies and his own clinic.

Build a plan from Wright, Fung or both

Your free plan shows a week of gym sessions, cardio, a day of eating, supplements and mobility, fitted to your age, time and health.

Plan in Wright's stylePlan in Fung's styleMix both

Questions

What is the main difference between Vonda Wright and Jason Fung?

Their training split differs most in aerobic base (zone 2): Wright about 45%, Fung about 35% (our estimate from their published routines). Wright's signature habit is Heavy 4 × 4 + daily jumps; Fung's is Fasting, less sugar.

How much protein do Wright and Fung recommend?

Wright: 30 g+ at every meal. Fung: No fixed target.

Whose advice has stronger evidence?

We rate the evidence behind Wright's protocol higher: solid, against mostly weak for Fung.

Do Wright and Fung disagree?

Not directly in what we reviewed. Their differences are in emphasis: wright puts more of the week into aerobic base (zone 2): about 45% against 35%.

Can I combine Wright and Fung?

Yes. In Build my mix you choose one expert per area, for example one for strength and another for eating. Your free plan shows the result straight away.

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Full sources are on each profile: Vonda Wright · Jason Fung. Reviewed October 2026.