When your blood sugar drops below 70 mg/dL, you need fast-acting carbohydrates immediately, about 15 grams worth. The goal is to get glucose into your bloodstream as quickly as possible, then follow up with a balanced snack to keep levels stable. What you eat in those first few minutes matters, and so does what you eat afterward.
The 15-15 Rule for Immediate Treatment
The standard approach is simple: eat 15 grams of fast-acting carbohydrates, wait 15 minutes, then check your blood sugar again. If it’s still below 70 mg/dL, repeat with another 15 grams. Keep going until your levels return to your target range.
Foods that deliver roughly 15 grams of quick carbohydrates include:
- Glucose tablets: follow the package directions, typically 3 to 4 tablets
- Fruit juice: half a cup of any unsweetened juice
- Regular soda: half a cup (not diet)
- Hard candy: about 3 pieces
- Honey or sugar: 1 tablespoon
These foods are all simple sugars that your body absorbs quickly. That speed is the entire point. You want something that hits your bloodstream in minutes, not something that takes a long time to digest.
Why Chocolate and Ice Cream Are Poor Choices
It’s tempting to reach for chocolate, ice cream, or a candy bar when you feel shaky. But high-fat foods slow down digestion, which means the sugar in them takes longer to reach your blood. Fat delays carbohydrate absorption, so your blood sugar stays low for longer than it needs to. Stick to pure, simple carbs for the initial fix. Save the fat and protein for the follow-up snack.
What to Eat After Your Blood Sugar Recovers
Once your levels are back above 70 mg/dL, the job isn’t done. Fast-acting carbs wear off quickly, and without a follow-up, your blood sugar can drop right back down. Eat a balanced snack or small meal that combines protein with complex carbohydrates. This slows digestion and gives your body a steadier supply of energy.
Good options include:
- Whole-grain toast with peanut butter
- Cheese and crackers
- A handful of nuts with a piece of fruit
- Yogurt with granola
- Half a turkey sandwich on whole-wheat bread
The protein and fat in these foods prevent the carbohydrates from being digested too quickly, which keeps your blood sugar from spiking and then crashing again.
Eating to Prevent Lows Throughout the Day
If you get frequent blood sugar dips, whether from diabetes medication or a condition called reactive hypoglycemia, your overall eating pattern makes a big difference. The core strategy is eating smaller meals more often, roughly every 3 hours, so your blood sugar never has a chance to bottom out. Aim for 5 to 6 eating occasions per day instead of 3 large meals, with snacks of about 15 to 20 grams of carbohydrates between meals.
Every meal and snack should include protein. Poultry, fish, eggs, cottage cheese, lentils, beans, tofu, or dairy all work. Adding protein slows carbohydrate digestion and keeps blood sugar more stable over the hours that follow. A portion of healthy fat does the same thing. Think nuts, nut butters, avocado, seeds, or olive oil.
Avoid large portions of carbohydrates in a single sitting. Keep carbs to roughly 40 to 50 grams per meal. Eating a huge plate of pasta or rice can trigger a blood sugar spike followed by a steep drop, especially if you’re prone to reactive hypoglycemia.
Choosing Carbs That Release Energy Slowly
Not all carbohydrates behave the same way in your body. Low-glycemic-index (low-GI) foods release glucose gradually, which prevents the sharp rises and falls that lead to crashes. High-fiber, whole-grain carbs are your best bet for steady energy.
Swap refined grains for these slower-burning options:
- Bread: multigrain, rye, seeded, or oat bread instead of white
- Rice: basmati, long grain, or brown rice instead of instant white rice
- Pasta: whole-wheat pasta cooked al dente
- Potatoes: new potatoes in their skin or sweet potatoes instead of mashed white potatoes
- Cereals: porridge (not instant), muesli, or bran-based cereals without added sugar
- Other grains: quinoa, barley, bulgur wheat, or couscous
Adding lentils, chickpeas, or beans to meals is especially helpful because they’re high in both fiber and protein. One practical trick: cooking starchy foods like rice or potatoes, cooling them in the fridge overnight, then reheating them the next day can lower their glycemic index. The cooling process changes the structure of the starch, making it digest more slowly.
When Food Isn’t Enough
Below 54 mg/dL is considered severe low blood sugar. At this level, your body’s normal recovery mechanisms start to fail, and you may not be able to recognize or treat the low on your own. If someone with low blood sugar becomes confused, loses consciousness, or can’t swallow safely, they should not be given food or drink. This is when glucagon, a prescription rescue medication, is needed. It can be given by a family member or bystander and doesn’t require a healthcare professional to administer. Anyone at risk for severe lows should have glucagon readily available and make sure the people around them know where it is and how to use it.