Check out this video by one of my favorite video bloggers on the internet: NutritionFacts.org.  He is in the middle of a whole mini-series on ChronoBiology (timing the delivery of food and medicine according to the biological clock.)  It turns out that the timing of things can make a huge difference.  It also adds a whole lot of weight to the argument that we need regular sleep at regular times. 

In the description below the video are the other videos so far in the series.  I've copied them here:

• • Eat More Calories in the Morning to Lose Weight (http://nutritionfacts.org/video/eat-m...)
  
• • Breakfast Like a King, Lunch Like a Prince, Dinner Like a Pauper (http://nutritionfacts.org/video/break...)
  
• • Eat More Calories in the Morning Than the Evening (http://nutritionfacts.org/video/eat-m...)
  
• • How Circadian Rhythms Affect Blood Sugar Levels (http://nutritionfacts.org/video/how-c...)
  
• • How to Sync Your Central Circadian Clock to Your Peripheral Clocks (http://nutritionfacts.org/video/how-t...)
  
• • The Metabolic Harms of Night Shifts and Irregular Meals (http://nutritionfacts.org/video/the-m...)
  
• • Shedding Light on Shedding Weight (http://nutritionfacts.org/video/shedd...)
  
• • Why People Gain Weight in the Fall (http://nutritionfacts.org/video/why-p...)

Keep this video in mind if you're taking blood pressure medication, or chemotherapy, or hormones, for example, and ask the prescribing physician is the timing is right for you.