Meal replacements vs meal delivery vs cooking at home: what each costs (USDA August 2026, company prices) and what the weight-loss trials found, side by side.
Fact-checked against FDA labels and official sources; not yet reviewed by a licensed clinician. This page is education, not medical advice. Talk to your doctor before starting, stopping or changing any treatment.
Key takeaways
- Across 23 trials (7,884 adults), diets with meal replacements led to 1.44 kg more weight loss at 1 year than other diets, and 6.13 kg more with enhanced support.[1]
- In a 2-year JAMA trial, a program with free prepared meals and counseling led to 7.4 kg average loss vs 2.0 kg with usual care.[7]
- USDA priced an adult's food at home at $58.50 to $112.20 a week in August 2026, from the Thrifty to the Liberal plan.[11]
- Eating home-cooked meals more than 5 times a week was linked with 28% lower odds of overweight in an observational study of 11,396 adults.[9]
In short: Meal replacements (shakes or bars that stand in for one or two meals) have the strongest trial evidence of the three, adding about 1.4 kg (3 lb) more weight loss at one year than other diets, and more with support. Prepared, portion-controlled meals also beat usual diets in several trials but cost the most, while cooking at home is the cheapest and has good evidence for diet quality but no weight-loss trials of its own. All three work through the same thing: fewer calories you can keep up.
This page compares cost and results side by side, using randomized trials, the USDA’s August 2026 food-cost report and company prices with the date each was checked. It does not name a winner. For specific products, see our researched lists of the best meal replacement shakes and the best meal delivery for weight loss, and for everyday eating, the nutrition hub. This is general education; if you have diabetes, kidney disease or take medicines for blood sugar or blood pressure, plan big diet changes with your clinician or a registered dietitian.
The three in one minute
| Meal replacements | Meal delivery | Cooking at home | |
|---|---|---|---|
| What it is | Shakes or bars with set calories and added vitamins, replacing 1 or 2 meals a day | Prepared meals to heat, or meal kits to cook, delivered weekly | Your own groceries and recipes |
| Typical cost (dated below) | About $2 to $6.50 a shake | About $8 to $12 a kit serving; $11 to $13.50 a prepared meal | About $8.40 to $16 a day for all food (USDA) |
| Trial evidence for weight | 23 trials, 7,884 adults: about 1.4 kg more loss at 1 year | Several trials of prepared or portion-controlled meals; no trials of commercial meal kits found | Observational: more home-cooked meals linked to lower odds of overweight |
| Portion control | Built in | Built in for prepared meals; kits depend on the menu you pick | Up to you |
| Skills and time | Almost none | Low (heat) to medium (kits) | Highest |
| Long-term habit | Has to shift to regular food eventually | Can continue, at a cost | The skill you keep |
What it costs to eat at home: the USDA benchmark
Every month the USDA prices four food plans that assume all meals and snacks are made at home: Thrifty, Low-Cost, Moderate-Cost and Liberal. They give a fair benchmark for “cooking,” because each plan is a nutritious diet, not just the cheapest groceries. In the report for August 2026 (issued September 2026), an adult cost $58.50 to $112.20 a week depending on plan and sex.
| Item | Woman | Man |
|---|---|---|
| Thrifty | $58.5 USD | $73.6 USD |
| Low-Cost | $63.6 USD | $73.2 USD |
| Moderate-Cost | $77.6 USD | $91.9 USD |
| Liberal | $99 USD | $112.2 USD |
For individuals in 4-person households (Thrifty plan age group 20 to 50). USDA suggests adding 20% for a person living alone and 10% for two people.
Source: USDA Food and Nutrition Service, Official USDA Food Plans: Cost of Food at Home, U.S. average, August 2026 (checked on October 7, 2026)
Divided by seven, that is about $8.40 a day for a woman on the Thrifty plan up to about $16 a day for a man on the Liberal plan, for every meal and snack. If you live alone, USDA suggests adding 20%, which brings the range to roughly $10 to $19 a day.
Cost side by side: two meals a day
Most people use shakes or delivered meals for one or two meals, not all of them. So the fairest comparison is what two meals a day cost each way. For cooking, we took two thirds of the USDA daily cost (Thrifty plan for women up to Liberal plan for men). For the others, we used the company prices in our researched lists, checked on October 6, 2026.
| Item | Low | High |
|---|---|---|
| Cooking at home (USDA Thrifty to Liberal) | $5.57 USD | $10.69 USD |
| Two meal-replacement shakes | $4.12 USD | $12.90 USD |
| Two meal-kit servings | $15.98 USD | $23.98 USD |
| Two prepared, delivered meals (Factor) | $21.98 USD | $26.98 USD |
Home cooking = 2/3 of a day's USDA cost for an adult 19 to 50 in a 4-person household. Shakes $2.06 to $6.45 each; kits from $7.99 to $11.99 a serving; Factor $10.99 to $13.49 a meal. Shipping and sales not included.
Source: USDA Food Plans, August 2026; company prices from InstaTuck's meal-replacement and meal-delivery lists (checked 2026-10-06) (checked on October 7, 2026)
The shake range is wide. At the low end, Herbalife Formula 1 powder was about $2.06 a serving before the milk you mix it with; at the high end, Huel Black Edition ready-to-drink was about $6.45 a bottle. Meal kits started at $7.99 a serving for Home Chef and HelloFresh, up to $11.99 for Green Chef, with shipping on top for some. Prepared meals from Factor ran $10.99 a meal on an 18-meal plan to $13.49 on a 6-meal plan; Trifecta’s Classic plan is about $12 a meal and CookUnity starts at $12.59.
Structured programs bundle food and coaching. Nutrisystem’s individual meals started at $1.99 each (homepage, September 25, 2026), though full plans cost more. A Jenny Craig Program example was $150 a week with a promo code in June 2026, about $21 a day for most meals and snacks. Trilivy (formerly Optavia) Reset 5 & 1 started at $384 to $480 per order on October 6, 2026, but the company page doesn’t say how many days an order covers. Our pages on Nutrisystem, Jenny Craig and Optavia have the details.
Results: what the trials show
Meal replacements
The largest review, published in Obesity Reviews in 2019, pooled 23 randomized trials with 7,884 adults with overweight or obesity. It looked at partial meal replacement (it left out very-low-calorie diets under 800 calories a day and total diet replacement). At one year, people assigned to a diet with meal replacements lost 1.44 kg (about 3 lb) more than people on other diets. With extra support from a coach or clinic, the gap grew, up to 6.13 kg (about 13.5 lb) when meal replacements came with enhanced support compared with other diets and regular support. One author had a grant from a meal-replacement company.
An earlier 2003 review of six trials compared a partial meal-replacement plan with a regular reduced-calorie diet at the same calorie target. The meal-replacement groups lost about 7 to 8% of body weight against about 3 to 7%, and fewer people dropped out at one year. In the Look AHEAD study of 5,145 adults with type 2 diabetes, people in the lifestyle program lost 8.6% of their weight in the first year (vs 0.7% with education alone), and using more meal replacements was one of the habits most linked with success, after physical activity and attending sessions.
Prepared and portion-controlled meals
Several trials tested pre-portioned meals against people choosing their own food with the same targets. They were all short of today’s subscription services: they used program meals or packaged entrées, and none tested a commercial delivery service like Factor or a meal kit.
| Item | Prepared or portion-controlled meals | Comparison group |
|---|---|---|
| Two frozen entrées a day, 8 weeks (60 women) | 5.6 kg | 3.6 kg |
| Portion-controlled plan, 6 months (100 adults with type 2 diabetes) | 7.3 kg | 2.2 kg |
| Prepared meal plan, 1 year (high blood pressure and cholesterol) | 5.8 kg | 1.7 kg |
| Jenny Craig with free meals, 2 years (442 women, center-based) | 7.4 kg | 2 kg |
Separate trials with different people, lengths and comparison groups; not head-to-head. Comparison groups: self-selected diet, diabetes education, usual-care diet, usual care.
Source: Hannum 2004 Obesity Research; Foster 2013 Nutrition & Diabetes; Metz 2000 Archives of Internal Medicine; Rock 2010 JAMA (checked on October 7, 2026)
The longest was the 2010 JAMA trial of 442 women, in which the Jenny Craig program with free prepared food and in-person counseling led to 7.4 kg (7.9%) average loss at two years, against 2.0 kg with usual care. That trial tested the in-person program, which closed in 2023; the current online Jenny Craig hasn’t been studied, as our Jenny Craig page explains. A 2015 review of commercial programs found Jenny Craig led to at least 4.9% more weight loss than control at 12 months and Nutrisystem at least 3.8% more at 3 months.
Cooking at home
We found no randomized trial that assigned people to cook at home and measured weight. The best data are observational. In a UK study of 11,396 adults, people who ate home-cooked main meals more than five times a week, compared with fewer than three, ate about 62 grams more fruit and 98 grams more vegetables a day and were 28% less likely to have an overweight BMI. That is a link, not proof: people who cook more may differ in other ways.
We also found no completed trial of a commercial meal-kit subscription for weight loss on PubMed (searched October 7, 2026); one Danish trial delivering a lower-carb, higher-protein diet through meal kits to people with type 2 diabetes has published its protocol.
Evidence at a glance
Our ratings below summarize how much trial evidence exists for weight loss, not how well each will suit you.
Meal replacements: trial evidence for weight loss (InstaTuck)Moderate to strong: 23 randomized trials
Prepared, portion-controlled meals: trial evidence (InstaTuck)Moderate: several trials, mostly program meals
Cooking at home: trial evidence for weight loss (InstaTuck)Limited: observational studies
Key numbers
- 1.44 kgmore weight lost at 1 year with meal-replacement diets than other diets (23 trials)Astbury et al., Obesity Reviews 2019
- 8.6%first-year weight loss in Look AHEAD's lifestyle program, where meal replacements were part of the planWadden et al., Obesity 2009
- $58.50-$112.20a week for an adult's food at home, USDA Thrifty to Liberal plans, August 2026USDA Food Plans
- 28%lower odds of overweight with home-cooked meals 5+ times a week vs under 3 (observational)Mills et al., IJBNPA 2017
Checked on October 7, 2026
Why structure helps, and where it stops
Shakes and prepared meals take away two hard parts of a calorie deficit: guessing portions and deciding what to eat. In the 8-week entrée trial, both groups had the same 1,365-calorie target, yet the group with packaged entrées lost more weight and more fat, which the authors put down to accurate portions. The catch is what happens after. A plan built on someone else’s food has to hand over to your own cooking and shopping at some point, so it helps to plan that step from the start. Our guide to keeping weight off covers the habits that help.
- Check the calories and protein. Shakes in our list ranged from 160 to 400 calories, and the lower-calorie menu lines in our delivery list were capped at about 550 to 650 calories a serving. Aim for meals with enough protein (about 25 to 30 grams, the amount studied in higher-protein diets) to stay full; see our high-protein diet guide.
- Read the sodium and sugar. One kit meal in our delivery list had 1,530 mg of sodium; one shake in our list had 11 grams of added sugar.
- Watch auto-ship terms. Nutrisystem and Jenny Craig plans ship on automatic repeat orders, and Nutrisystem charged $125 if you cancelled its first-order discount early (as of June 2026).
- Don’t go too low on your own. Very-low-calorie plans under 800 calories a day were outside the main review; talk with your clinician before trying one.
What people weigh up
- Tightest budget: cooking at home and shakes overlap at the low end; a $2 to $3 shake costs about the same as one home-cooked meal at USDA prices (one third of a day is about $2.80 to $5.30).
- Least time and fewest decisions: shakes and heat-and-eat meals; kits still need you to cook.
- Most trial evidence: meal replacements, especially with coaching or clinic support.
- Eating with family: kits and home cooking feed everyone; one-person shakes and meals don’t.
- Keeping it going: cooking skills last; some people use shakes or delivery to get started, then shift meals back home one at a time.
A middle path many people use
- Start with structureReplace one meal a day, often breakfast or lunch, with a shake or a portioned meal.
- Cook the other meals simplyLean protein, vegetables and a whole grain; weigh portions for a few weeks.
- Learn your portionsA kitchen scale and meal-prep containers make home portions match delivered ones.
- Hand back one meal at a timeSwap a shake or delivered meal for a home-cooked one and watch your weekly trend.
- Keep what worksIf one shake or portioned meal a day suits you, it can stay part of your routine.
For home portions, see our lists of kitchen scales and meal-prep containers. The calorie calculator estimates your daily target and the protein calculator your protein range. For foods that keep you full on fewer calories, see our filling foods. To compare full programs, our programs hub and the comparison of medical vs commercial programs cover coaching and costs, and more side-by-side pages are in our comparisons hub.
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- Is a meal-replacement plan safe with my medicines for diabetes or blood pressure?
- How many calories and how much protein should each meal or shake give me?
- Would a program with coaching suit me better than doing this on my own?
- How should I move from shakes or delivered meals back to my own cooking?
- Do I need any lab checks before starting a lower-calorie plan?
Frequently asked questions
Do meal replacement shakes work for weight loss?
In trials, yes, modestly. A review of 23 trials found about 1.44 kg (3 lb) more weight loss at one year than other diets, and more when shakes came with coaching or clinic support.
Is meal delivery cheaper than cooking?
Usually not. In August 2026 the USDA priced all of an adult's food at home at about $8.40 to $16 a day, while two prepared delivered meals cost about $22 to $27 a day at prices checked on October 6, 2026.
Are meal kits good for weight loss?
They can help with portions if you pick the lower-calorie menus, but we found no completed trial of a commercial meal-kit subscription for weight loss. Trials of prepared, portion-controlled meals are more encouraging.
How many meals a day should I replace?
Trials of partial meal replacement usually replaced one or two meals and kept at least one regular meal. Plans under 800 calories a day were outside that review; agree on any plan with your clinician or dietitian.
What happens when I stop the shakes or delivered meals?
Plan for that step from the start. Moving back to home-cooked meals one at a time, while keeping portions and protein steady and watching your weekly weight trend, gives you a plan for after.
References
- Astbury NM, Piernas C, Hartmann-Boyce J, et al.. A systematic review and meta-analysis of the effectiveness of meal replacements for weight loss. Obesity Reviews, 2019. doi:10.1111/obr.12816 · PMID 30675990 (accessed October 7, 2026) Meta-analysis
- Heymsfield SB, van Mierlo CA, van der Knaap HC, et al.. Weight management using a meal replacement strategy: meta and pooling analysis from six studies. International Journal of Obesity, 2003. doi:10.1038/sj.ijo.0802258 · PMID 12704397 (accessed October 7, 2026) Meta-analysis
- Wadden TA, West DS, Neiberg RH, et al.. One-year weight losses in the Look AHEAD study: factors associated with success. Obesity, 2009. doi:10.1038/oby.2008.637 · PMID 19180071 (accessed October 7, 2026) Randomized trial
- Hannum SM, Carson L, Evans EM, et al.. Use of portion-controlled entrees enhances weight loss in women. Obesity Research, 2004. doi:10.1038/oby.2004.61 · PMID 15044672 (accessed October 7, 2026) Randomized trial
- Foster GD, Wadden TA, LaGrotte CA, et al.. A randomized comparison of a commercially available portion-controlled weight-loss intervention with a diabetes self-management education program. Nutrition & Diabetes, 2013. doi:10.1038/nutd.2013.3 · PMID 23507967 (accessed October 7, 2026) Randomized trial
- Metz JA, Stern JS, Kris-Etherton P, et al.. A randomized trial of improved weight loss with a prepared meal plan in overweight and obese patients: impact on cardiovascular risk reduction. Archives of Internal Medicine, 2000. doi:10.1001/archinte.160.14.2150 · PMID 10904458 (accessed October 7, 2026) Randomized trial
- Rock CL, Flatt SW, Sherwood NE, et al.. Effect of a free prepared meal and incentivized weight loss program on weight loss and weight loss maintenance in obese and overweight women. JAMA, 2010. doi:10.1001/jama.2010.1503 · PMID 20935338 · NCT00640900 (accessed October 7, 2026) Randomized trial
- Gudzune KA, Doshi RS, Mehta AK, et al.. Efficacy of commercial weight-loss programs: an updated systematic review. Annals of Internal Medicine, 2015. doi:10.7326/M14-2238 · PMID 25844997 (accessed October 7, 2026) Meta-analysis
- Mills S, Brown H, Wrieden W, White M, Adams J. Frequency of eating home cooked meals and potential benefits for diet and health: cross-sectional analysis of a population-based cohort study. International Journal of Behavioral Nutrition and Physical Activity, 2017. doi:10.1186/s12966-017-0567-y · PMID 28818089 (accessed October 7, 2026) Other
- Kopp LHP, Søgaard-Hansen CM, Zachhau KM, et al.. Effects of a carbohydrate-reduced high-protein diet delivered with meal kits to Danish people with type 2 diabetes: protocol for a 12-month randomised controlled trial. BMJ Open, 2024. doi:10.1136/bmjopen-2024-084686 · PMID 39142677 (accessed October 7, 2026) Other
- Official USDA Food Plans: Cost of Food at Home (Thrifty Food Plan and Low-Cost, Moderate-Cost and Liberal plans), U.S. average, August 2026. U.S. Department of Agriculture, Food and Nutrition Service, 2026. (accessed October 7, 2026) Government page
- Factor plans, FAQ and GLP-1 menu (factor75.com/plans, /weekly-menu, /eat/glp1-meal-delivery). Factor. (accessed October 6, 2026) Other
- Home Chef (starting price per serving, as listed in InstaTuck’s meal delivery list). Home Chef. (accessed October 6, 2026) Other
- Herbalife Formula 1 and other meal-replacement shake prices (as listed in InstaTuck’s meal replacement shake list). Product makers. (accessed October 6, 2026) Other
- Leidy HJ, Clifton PM, Astrup A, et al.. The role of protein in weight loss and maintenance. American Journal of Clinical Nutrition, 2015. doi:10.3945/ajcn.114.084038 · PMID 25926512 (accessed October 7, 2026) Review
Facts checked on October 7, 2026
Educational information, not medical advice. Talk with a qualified healthcare professional about your own situation. In an emergency call 911.