Research

Hormonal

Intermittent fasting (IF) produces weight loss comparable to continuous calorie restriction while offering superior improvements in insulin sensitivity and lipid profiles through a metabolic switch to ketone-based energy.

Intermittent fasting is a viable weight loss strategy that works as well as traditional calorie counting but may offer better metabolic benefits like improved insulin sensitivity. You can choose from several methods: eating normally on 2 days and restricting calories on 2 others (5:2), alternating between fasting and eating days (ADF), or limiting your daily eating to an 8-hour window (16:8). The key is consistency and allowing your body to switch from burning glucose to burning fat (ketones). Start with a protocol that fits your lifestyle, such as 16:8, and adjust based on your hunger and energy levels.

ModerateSupportsMEDIUM confidence
IF has shown to be effective in reducing body weight and improving metabolic parameters... Physiological insights reveal that IF leads to a metabolic switch from glucose-based to ketone-based energy, which plays a critical role in its effectiveness.
Anna Kaźmierczak et al. · Quality in Sport · 2024

Why this rating

The paper is a review of various studies, not a single primary RCT, providing moderate evidence quality.

Source

Effects of Intermittent Fasting on Weight Loss and Metabolic Health

Anna Kaźmierczak et al. · Quality in Sport · 2024

DOI 10.12775/qs.2024.22.54618

narrative_review
Read the paper
DOI resolved against Crossref · corpus check 2026-06-10

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