Will a month of fasting in the morning have long-term negative effects on my health?

Hello! With my busy mornings at work, I've developed a habit of skipping breakfast for the past month. I used to try to eat at least a little, but these days, I'm prioritizing getting more sleep or shortening my preparation time, so I've been unintentionally going hungry for longer periods of time.

At first, I felt lighter, but as time went on, I started to feel less focused before lunchtime, and sometimes I even felt nauseous, which started to worry me. I'd like to hear from experts about the specific effects of skipping breakfast on our metabolism and digestive health when it's not temporary and continues for more than a month, and whether continuing this routine will cause any significant health problems.