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Will it break my fast?

Plain water fits an ordinary fasting window. Coffee, tea and other products depend on additions and the rule you follow. Food energy or amino acids count as intake; a label cannot measure insulin or autophagy.

Showing 19 of 19 items

Compare 19 items using their ingredients, serving size and the actual rule of your eating schedule. Open each answer for conditions and source limitations.

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  • Source-backed
  • Not medical advice

Compare items and their conditions

Choose two or three existing items. Compare the actual answer, ingredients, eating rules and evidence limits.

Black coffee

Plain black coffee fits a routine that permits unsweetened drinks. Milk, sugar and oil change that answer.

What to check in practice
Check the whole drink, including syrups, cream and oil. An espresso and a large flavoured latte are different products.
Serving and calories
Trace calories in plain brewed coffee; additions and serving size matter.
Weight loss / calories
Count additions in your daily intake; coffee does not promise weight loss.
Metabolic / insulin
Coffee is not a test of your insulin level.
Water-only / procedure rules
Coffee is not water-only, even when served black.
Autophagy: evidence limit
The cited source does not establish a dose of black coffee that preserves human autophagy. The timer cannot measure it.
Source and limits

Healthline — Can You Combine Intermittent Fasting and Coffee?

Describes plain coffee separately from calorie-containing additions.

No personal insulin, ketone or autophagy measurement; product-specific values must come from its label.

Milk

Milk adds food energy and ends a no-calorie fasting window. A splash and a glass are different amounts.

What to check in practice
Milk contains nutrients; plant drinks vary by recipe and added sugar. For example, a label showing 50 kcal per 100 ml would mean 15 kcal in 30 ml. This is label arithmetic, not a universal milk value.
Serving and calories
Read kcal per 100 ml and measure the amount added.
Weight loss / calories
Include the amount in your intake; a splash does not by itself determine long-term weight change.
Metabolic / insulin
Calories in milk do not reveal the size or timing of an insulin response.
Water-only / procedure rules
Milk is food, so it is outside both water-only and no-calorie rules.
Autophagy: evidence limit
The cited source does not establish a dose of milk that preserves human autophagy. The timer cannot measure it.
Source and limits

Healthline — What Breaks a Fast? Foods, Drinks, and Supplements

Distinguishes calorie-containing additions from plain fasting drinks.

No personal insulin, ketone or autophagy measurement; product-specific values must come from its label.

These answers describe eating rules, not measured insulin, ketones or autophagy. Medical-test instructions and prescribed care take priority. Selections stay in this tab.

What can you drink while fasting?

Plain water, black coffee and unsweetened tea are common choices in everyday intermittent fasting. A water-only rule is different. Check ingredients in flavoured drinks; calorie content does not establish a metabolic state.

Common drinks while fasting:

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Fits the stated rule

Adds nutrients or energy

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