India, Sept. 23 -- Intermittent fasting (IF) is how you eat. It involves following a restricted eating and non-eating (fasting) window. For calorie deficit, boosting metabolism, improving blood sugar management or other health and fitness goals, many people follow intermittent fasting. There are many types of intermittent fasting, depending on the duration of fasting and eating hours.

But if you often do a trust fall on intermittent fasting, then it's also time to look at the downsides for a reality check. A study published in the journal of Diabetes & Metabolic Syndrome: Clinical Research & Reviews, released on August 22, 2025, raised an alarm over the very short eating periods in intermittent fasting, particularly for heart health.

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