This video lays out a short dietary protocol that aims to increase autophagy without requiring a true water fast. The core idea is to create a temporary calorie deficit, suppress glucose, raise ketones, and keep the protocol simple enough that people can actually repeat it.

1. Dom D'Agostino's short protocol for raising autophagy

D'Agostino describes a modified ketogenic approach that emphasizes low glucose, higher ketones, and strong metabolic signaling rather than total food deprivation. He frames it as a practical variation on fasting-mimicking ideas, but easier to live with and potentially easier to sustain over time.

2. How to induce and maximize autophagy with a 3 to 5 day protocol

The protocol is not about endless deprivation. It is about creating a brief, targeted metabolic environment where autophagy and cardiometabolic improvements can both emerge.

2.1. Core diet principles

The foundation is an energy deficit, low carbohydrate intake, and nutrient-dense foods that preserve essential fats, amino acids, and overall nutritional quality. D'Agostino emphasizes foods like sardines, egg yolks, and liver, while also keeping protein somewhat constrained to avoid blunting the autophagy signal.

2.2. Why 3 to 5 days matters

He argues that about three days is often enough to reach the desired state, and that extending it a bit further can deepen the benefit. But he also warns against turning this into a much longer low-calorie grind that harms hormones or recovery.

2.3. Why exercise helps

Exercise acts as a strong amplifier. Even brisk walking can meaningfully reinforce the metabolic effect of the diet, without requiring the kind of intense resistance training that might fight the goals of the protocol.

2.4. Exogenous ketones as a support tool

Exogenous ketones can make the protocol easier by raising ketones and lowering glucose without adding much behavioral friction. The point is not dependency, but making adherence more realistic.

3. Why this may be more sustainable than fasting

One of the strongest arguments in the video is psychological, not just biochemical.

3.1. Long-tail benefits

D'Agostino suggests that a short metabolic intervention can improve markers like triglycerides, inflammation, glucose, and insulin resistance, and that the benefits may persist well beyond the protocol itself.

3.2. Compared with longer fasts

He is clear that very long fasts come with tradeoffs, especially around hormones, recovery, and muscle retention. A shorter, food-supported intervention may preserve more of the upside with fewer of the costs.

3.3. The role of energy flux

The discussion also points to energy flux: using movement and activity, not just eating less, to create the deficit. That makes the protocol more compatible with a life that still has rhythm and work in it.

3.4. Rebuilding intuitive eating

A major behavioral claim is that this kind of protocol helps people loosen the hold of hyper-palatable food and recover a more intuitive relationship with hunger, satiety, and food choice.

4. Gut health, mental health, and inflammation

The conversation goes beyond fat loss or autophagy and into the broader systems affected by metabolic state.

4.1. Better gut barrier function

Calorie restriction and ketosis may reduce gut permeability, lower inflammatory stress, and support a healthier gut environment. That matters because the gut is not just about digestion; it is also tied to immune and neurological states.

4.2. Infection and psychiatric illness

D'Agostino also links chronic infection, inflammation, gut dysfunction, and mental health conditions. Whether or not every causal chain is settled, the broader takeaway is that metabolism and inflammation likely matter much more in psychiatry than older models assumed.

4.3. Ketosis as a psychiatric tool

That leads to the idea of therapeutic ketosis as part of metabolic psychiatry: not as a cure-all, but as a potentially powerful lever for certain psychiatric and neurological conditions.

5. Creatine as a broader health support

The video briefly pivots to creatine as a useful support for brain health, inflammation, longevity, and performance. It is treated less as a bodybuilding supplement and more as part of a broader metabolic toolkit.

6. Nicotine as an appetite and focus aid

D'Agostino also mentions very careful nicotine use as a personal tool for appetite suppression and focus during these interventions. He frames it explicitly as a risk-benefit decision, not a general recommendation.

Closing

The most useful part of this framework is not that it is extreme. It is that it tries to preserve enough biological effect while staying realistic enough to repeat. That is what makes it more interesting than a dramatic fast most people will never sustain.