Mixed
Intentional weight loss of approximately 13% significantly reduces the risk of developing type 2 diabetes, sleep apnea, hypertension, dyslipidemia, and asthma compared to maintaining a stable higher BMI.
If you have obesity (BMI 25-50) and lose about 13% of your body weight intentionally, you significantly lower your risk of type 2 diabetes, sleep apnea, high blood pressure, high cholesterol, and asthma. This benefit is greater than just having a lower BMI without losing weight, suggesting metabolic improvements beyond just mass reduction. Focus on sustainable weight loss strategies like dietary changes and physical activity, as even partial maintenance of loss yields substantial health protection.
Assuming a BMI of 40 kg/m2 before weight loss, this resulted in risk reductions for T2D (41%), sleep apnoea (40%), hypertension (22%), dyslipidaemia (19%) and asthma (18%).
Why this rating
Large observational cohort (n=571,961) with rigorous adjustment for confounders, but retrospective design limits causal inference.
Source
Weight loss and risk reduction of obesity-related outcomes in 0.5 million people: evidence from a UK primary care database
Christiane Lundegaard Haase et al. · International Journal of Obesity · 2021
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