# Mood Improves. But Not in Proportion to the Weight Lost

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- Last updated: 2026-08-15
- Page title: Mood Improves. But Not in Proportion to the Weight Lost | Assoc. Prof. Dr. Alişan Burak Yaşar

> Mood improves in weight-loss programs. But the improvement does not track the weight lost. Obesity and depression reinforce each other. In a pooled analysi

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# Mood Improves. But Not in Proportion to the Weight Lost

August 15, 2026Recent Articles

Mood improves in weight-loss programs. But the improvement does not track the weight lost.

Obesity and depression reinforce each other. In a pooled analysis of 15 prospective studies, participants who were obese at baseline had significantly higher odds of depression at follow-up (OR 1.55). The reverse was also true: participants with depression at baseline had higher odds of obesity at follow-up (OR 1.58). Luppino et al., Arch Gen Psychiatry, 2010. This bidirectional relationship applies to obesity. The same cannot be said for being overweight, because the association almost disappears after adjustment for other variables.

The key question is this: does mood improve with weight loss? In an analysis of 42 randomized controlled trials, depressive symptoms decreased in behavioral weight-management programs, but the effect was small (Jones et al., Obesity Reviews, 2021). The crucial finding comes from another analysis of 31 studies: weight change, treatment duration, and session intensity were not significantly associated with changes in depressive symptoms. Moreover, symptoms also decreased in programs that did not target weight loss (Fabricatore et al., Int J Obesity, 2011).

This has clinical implications. In a cohort of 14,475 people followed for 16 years, metabolically unhealthy people of normal weight had a higher risk of depressive symptoms
than metabolically healthy people with obesity (Hinnouho et al., PLoS ONE, 2017). And in a prospective study of 6,157 people, those who experienced weight discrimination had 2.5 times the odds of being obese four years later. Shaming does not lead to weight loss; instead, it increases the risk (Sutin and Terracciano, PLoS ONE, 2013).

What to do: make staying in the program your goal, rather than the number on the scale. Have your waist circumference, fasting glucose, lipid profile, and blood pressure checked. If increased
appetite, excessive sleep, and a heavy, leaden feeling of fatigue occur together, tell your physician. Ask for metabolic monitoring when starting psychiatric medication.

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