metaboliq
How much weight can you lose in 6 months?
Most people on a diet-based programme lose 5 to 9% of their body weight in six months.
Read the full section
In kilos, trials put the average at 5 to 8.5 kg, and weight tends to level off at about the six-month mark.
Those figures come from Marion Franz's review of 80 weight-loss trials, each of which followed people for at least a year. Programmes built on eating less, with or without exercise, took off 5 to 8.5 kg in the first six months. At four years, 3 to 6 kg was still off on average. Advice alone and exercise alone did little.
Kevin Hall, a physicist who models human metabolism at the US National Institutes of Health, explains why the curve has that shape. When you cut what you eat, your weight drifts towards a new, lower level, fast at first and then more slowly, with a half-time of about a year. So the first months always look better than the later ones, and many people quit in month four just when the plan is doing what it should.
Averages hide a wide spread. Some people take off 15% or more in six months and some barely move. Ravi, whose six months we follow below, set his target with a doctor after a blood test. Every Metaboliq plan begins the same way, with a home blood test, and keeps a longer aim in view: "Lose up to 20% of your body weight — and keep your muscle". Results vary; your doctor decides what is right for you. The table turns 5% and 10% into kilos at three starting weights.
| 5% | 10% | |
|---|---|---|
| At 70 kg | 3.5 kg | 7 kg |
| At 85 kg | 4.3 kg | 8.5 kg |
| At 100 kg | 5 kg | 10 kg |
- 5-8.5 kgaverage in six months
Month 1: measure first, then set up the plate
The first month is for numbers and habits.
Sources: [3]
Read the full section
A blood test, a waist measurement and a weekly weigh-in tell you where you are starting, and the plate changes before anything else does.
Ravi, 38, a sales manager in Gurugram, is a composite of the readers who write to us. He weighed 94 kg, his waist measured 104 cm, and his company health check had flagged his sugar. His home blood test showed an HbA1c of 6.1, in the prediabetes range, a normal thyroid, and triglycerides on the high side. His doctor went through each number with him on a video call.
His first month changed only a few things. Two rotis instead of four at dinner, eggs at breakfast instead of aloo paratha, no sugar in his tea, and a 15-minute walk after lunch and after dinner. He measured his waist at the navel every Sunday morning. For Indian adults, 90 cm for men and 80 cm for women is the line to get under.
The scale tends to move fastest in a month like this, partly because less starch means the body holds less water. He also slept better, which turned out to matter more than he expected.
- Month 1Measure
Blood, waist, plate.
- Months 2-3Build
Protein, strength.
- Month 4Plateau
Review, adjust.
- Months 5-6Hold
Keep it off.
- 90 / 80 cmIndian waist lines, men and women
Months 2 and 3: protein, strength and the steady loss
Most of the fat comes off in months two and three.
Read the full section
Protein at every meal and two or three strength sessions a week decide how much of the loss is fat and how much is muscle.
Protein helps on two fronts. Heather Leidy's review found that higher-protein meals leave people fuller and eating less at the next meal, and Thomas Wycherley's meta-analysis of weight-loss trials found higher-protein diets kept more lean mass. The chart shows the protein in a usual serving of common Indian foods, from the Indian Food Composition Tables.
Strength work does the rest. In Gary Hunter's trial, women who lifted weights while losing about 12 kg kept their fat-free mass and their resting calorie burn, and women who did only aerobic training or no exercise at all lost some of both.
Ravi added a second protein at lunch, usually curd or a boiled egg next to his dal, walked for 30 minutes on five evenings, and did two sessions a week at home with a resistance band and a pair of 5 kg dumbbells. The plan's pace was about half a kilo a week, and the tape measure was the check: a waist that comes down faster than the weight is what fat loss with muscle kept looks like.
A day of meals on the six-month plan
Ravi's food did not change much in kind over the six months. The amounts changed, the order changed, and protein turned up at every meal.
Sources: [7]
Read the full section
Before the plan, his day was an aloo paratha with sweet chai at 9, a canteen thali with three rotis and rice at 2, samosa and chai at 5, and a late dinner at 10 that was often biryani or takeaway. On the plan, breakfast is two boiled eggs or a besan chilla with green chutney, and tea without sugar. Lunch is two rotis, a full katori of dal, sabzi and curd from the same canteen. At 5 he has roasted chana or a fruit. Dinner, by 8.30, is chicken, fish or paneer with sabzi and one roti.
The protein in each meal comes from ordinary Indian food. A boiled egg gives about 7 g, a 50 g piece of paneer about 9 g, and a 100 g piece of raw chicken breast more than 20 g, going by the Indian Food Composition Tables. A katori of moong dal, about 30 g raw, adds about 7 g. That is far more protein than his old day carried, with no powder involved.
On weekends he eats out once, usually a dosa or a tandoori plate, and does not count it. The routine is the one he can see himself keeping in month seven, which is the point of building it this way.
| Before | On the plan | |
|---|---|---|
| Breakfast | Aloo paratha, sweet chai | Eggs or besan chilla |
| Lunch | 3 rotis and rice | 2 rotis, dal, curd |
| 5 pm | Samosa and chai | Roasted chana or fruit |
| Dinner | Biryani at 10 | Chicken or paneer by 8.30 |
Month 4: the weight loss plateau, and why it happens
Around month four, the scale often stops moving for two or three weeks.
Read the full section
That is the most common point for a plateau, and it has two causes: a lighter body burns a little less, and the hormones that drive hunger push back.
Priya Sumithran's study in Melbourne followed 50 adults who lost an average of 13.5 kg. A year later their leptin, the hormone that tells the brain you are full, was still low, their ghrelin, which makes you hungry, was still high, and they said they felt hungrier than before they began. Michael Rosenbaum's work at Columbia adds that a body which has lost weight spends less energy than its new size would predict, mostly through less everyday movement.
Ravi's month-four review with his doctor looked at his weight and waist together. A waist that keeps shrinking while the scale stalls still means fat is coming off. His doctor added a third strength session, moved his evening walk to 40 minutes, and asked about sleep, which had slipped to six hours with a new work target. On the same diet, sleeping 5.5 hours instead of 8.5 cut the share of weight lost as fat by more than half in one trial.
Month four is also when a doctor judges whether food and exercise are enough for your goal, or whether a further step, such as GLP-1 treatment for people who qualify, has a place.
- Weight and waist curve
- Repeat any abnormal test
- Protein and grain check
- Steps and strength load
- 13.5 kglost, hunger up a year on
Months 5 and 6: does losing weight fast mean it comes back?
Katrina Purcell's trial in Melbourne tested exactly this question.
Read the full section
She put 200 adults on either a fast 12-week programme or a slow 36-week one, and followed them for nearly three years afterwards.
More of the fast group reached a 12.5% loss, 81% against 50%. By the end of follow-up, both groups had regained about 71% of the weight they had lost. How quickly they lost it made no difference to how much came back. What brought it back was the old routine returning.
Ravi spent months five and six practising the routine he meant to keep. Same plate, three strength sessions a week, a weigh-in every Monday, and an agreement with his doctor that a 2 kg rise would mean a phone call rather than a crash diet. He went to two family weddings in those weeks, ate what was served, and was back to his usual week by the Tuesday.
At his plan's pace, about half a kilo a week after a quicker first month, six months comes to roughly 9 kg, close to 10% of his starting weight and inside the 5 to 10% range where Look AHEAD, in adults with type 2 diabetes, saw HbA1c fall. His plan for month seven looks almost the same as month six.
- 71%regained in both groups
15 kg in 6 months with a doctor: what it really takes
For most people, 15 kg in six months means losing more than half a kilo every week for 26 weeks.
Read the full section
Food and exercise alone rarely do that. A doctor-led plan can get closer, and keep it safe.
The health gains start long before 15 kg. Donna Ryan's review found that blood sugar, triglycerides and blood pressure improve with a 5 to 10% loss, while sleep apnoea and fatty liver with inflammation usually need 10 to 15%. In Look AHEAD, people with type 2 diabetes who lost 5 to 10% in a year were three and a half times as likely to cut HbA1c by half a point. In the Diabetes Prevention Program, a target of 7% cut new cases of diabetes by 58%.
The faster the pace, the more a doctor has to watch. Losing more than about a kilo a week raises the chance of gallstones, of low sugar in people on diabetes treatment, of dizziness and of muscle loss. A doctor is also the one who decides whether GLP-1 treatment has a place in your plan, a call that rests on your BMI and your other conditions rather than on a date you have in mind.
For Ravi, at 94 kg, 15 kg would be 16%. His doctor's plan was 10% in six months, held steady, with a fresh look at his reports before deciding whether to aim for more in the six months after.
| Study | What improves | |
|---|---|---|
| 5-10% off | Ryan review | Sugar, BP, triglycerides |
| 10-15% off | Ryan review | Sleep apnoea, fatty liver |
| 7% target | DPP | 58% less new diabetes |
Every source, in full (14)
[1] Franz MJ, et al. Weight-loss outcomes: a systematic review and meta-analysis of weight-loss clinical trials with a minimum 1-year follow-up
Journal of the American Dietetic Association, 2007. Diet-based programmes produced a mean loss of 5 to 8.5 kg (5-9%) in the first six months, with weight plateauing at about six months; at four years 3 to 6 kg was still off, while advice alone or exercise alone produced little loss.
Read the source[2] Hall KD, et al. Quantification of the effect of energy imbalance on bodyweight
The Lancet, 2011. A model of adult metabolism shows the body's weight responds slowly to a lasting change in intake, with a half-time of about a year, so loss is fastest at first and then slows as the body adapts.
Read the source[3] Misra A, et al. Consensus statement for diagnosis of obesity, abdominal obesity and the metabolic syndrome for Asian Indians and recommendations for physical activity, medical and surgical management
Journal of the Association of Physicians of India, 2009. Set the Indian adult bands: BMI 18.0-22.9 normal, 23.0-24.9 overweight and 25 or more obesity, with abdominal obesity at a waist of 90 cm or more in men and 80 cm or more in women.
Read the source[4] Leidy HJ, et al. The role of protein in weight loss and maintenance
American Journal of Clinical Nutrition, 2015. Reviews the evidence that higher-protein meals increase reported fullness and reduce later intake compared with meals matched for energy but lower in protein.
Read the source[5] Wycherley TP, et al. Effects of energy-restricted high-protein, low-fat compared with standard-protein, low-fat diets: a meta-analysis of randomized controlled trials
American Journal of Clinical Nutrition, 2012. In energy-restricted trials, higher-protein diets produced slightly greater fat loss and better preservation of fat-free mass than standard-protein diets.
Read the source[6] Hunter GR, et al. Resistance training conserves fat-free mass and resting energy expenditure following weight loss
Obesity, 2008. In 94 women losing about 12 kg, those who did resistance training kept their fat-free mass (46.9 to 47.2 kg), resting energy expenditure and strength; those doing aerobic training (45.4 to 44.4 kg) or no exercise (47.9 to 46.4 kg) lost fat-free mass and resting energy use.
Read the source[7] Longvah T, Ananthan R, Bhaskarachary K, Venkaiah K. Indian Food Composition Tables 2017
National Institute of Nutrition (ICMR), Hyderabad, 2017. Table 1, Proximate Principles and Dietary Fibre: energy, protein, fat, available carbohydrate and dietary fibre per 100 g edible portion. Every food figure in this page's charts is computed from it for the serving shown.
Read the source[8] Sumithran P, et al. Long-term persistence of hormonal adaptations to weight loss
New England Journal of Medicine, 2011. Fifty adults who lost an average of 13.5 kg on a very-low-energy diet still had lower leptin, higher ghrelin and a higher appetite one year later than before the weight loss.
Read the source[9] Rosenbaum M, Leibel RL. Adaptive thermogenesis in humans
International Journal of Obesity, 2010. After weight loss, energy expenditure falls by more than the change in body mass and composition predicts, with much of the difference in the energy spent on physical activity.
Read the source[10] Nedeltcheva AV, et al. Insufficient sleep undermines dietary efforts to reduce adiposity
Annals of Internal Medicine, 2010. On the same reduced-calorie diet for 14 days, 5.5 hours of sleep instead of 8.5 cut the share of weight lost as fat by 55% (0.6 kg of fat against 1.4 kg), raised the loss of fat-free mass by 60% (2.4 kg against 1.5 kg) and increased hunger.
Read the source[11] Purcell K, et al. The effect of rate of weight loss on long-term weight management: a randomised controlled trial
The Lancet Diabetes & Endocrinology, 2014. Of 200 adults, 50% on a gradual 36-week programme and 81% on a rapid 12-week one reached 12.5% weight loss; after nearly three years both groups had regained about 71% of it, so the speed of loss did not change how much came back.
Read the source[12] Ryan DH, Yockey SR. Weight loss and improvement in comorbidity: differences at 5%, 10%, 15%, and over
Current Obesity Reports, 2017. Blood sugar and triglycerides improve with small amounts of weight loss; obstructive sleep apnoea and fatty liver with inflammation usually need 10 to 15%; more weight loss brings more improvement; people with a BMI over 40 lose the same share of weight with lifestyle care as people at lower BMIs, with equal benefit from modest loss.
Read the source[13] Wing RR, et al. Benefits of modest weight loss in improving cardiovascular risk factors in overweight and obese individuals with type 2 diabetes
Diabetes Care, 2011. In 5,145 Look AHEAD participants with type 2 diabetes, losing 5 to under 10% of body weight in a year made a half-point fall in HbA1c about 3.5 times as likely, and improved blood pressure, triglycerides and HDL cholesterol.
Read the source[14] Knowler WC, et al. Reduction in the incidence of type 2 diabetes with lifestyle intervention or metformin
New England Journal of Medicine, 2002. In 3,234 adults with raised blood sugar, a lifestyle programme aiming at 7% weight loss and 150 minutes of activity a week cut new cases of type 2 diabetes by 58% over an average of 2.8 years.
Read the source
