Intermittent fasting

I would like to know too. 

There is no risks if that's not for too long

Your body is more sensitive to insulin since the body secretes less insulin when fasting. The body then will use the stored fat as as source of energy which results in fat loss and weight loss

Comment #51
La dieta del digiuno intermittente allevia i sintomi dei disturbi neurologici e dell'umore. I vantaggi del digiuno intermittente mirano direttamente a una serie di meccanismi associati a diversi stati dolorosi e condizioni di dolore cronico, piuttosto che al dimagrimento.

Lo svantaggio è che l'alimentazione limitata a 8 ore al giorno non solo non ha ridotto il rischio complessivo di morte, ma lo ha addirittura aumentato. Un'analisi ulteriore, fatta in persone che già soffrivano di cuore, ha poi dimostrato che digiunare anche solo per 14 ore comporta un rischio più elevato di infarto, ictus e morte.

Jim Wattier

What are the benefits of intermittent fasting? Benefits can include weight loss, improved metabolic health, reduced inflammation, better heart health, and enhanced brain function. Some studies also suggest it may help with longevity.
Are there any risks or side effects associated with intermittent fasting? Potential risks include hunger, fatigue, irritability, headaches, and nutrient deficiencies if not done properly. It’s important to consult with a healthcare provider before starting IF, especially if you have underlying health conditions.

MaryAnne Gildroy

They say, you should talk to a doctor before starting this.
You should be 18 years old or older.
Itsn9r for everyone.
You can drink black coffee, water and tea all day long.
You can not be diabetic. 
No heart issues.

I think it's a hard diet, and you have to be very strict on yourself.